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CPU Fan Error: Here’s How To Quickly Fix It



CPU Fan Error: Here’s How To Quickly Fix It

Many things can cause a CPU fan error, but the common culprit is dust. Other issues can also be the cause, ranging from a loose fan connection to a failed fan.

Dust may accumulate in your computer over time and prevent the heat sink from working correctly. This will make it difficult for your CPU to cool itself down, causing a CPU fan error.

Fortunately, you can fix this issue on your own without calling a technician.

What Is a CPU Fan Error?

A CPU Fan Error occurs when your system has an issue with one or more of its fans not spinning correctly, which can cause it to overheat and shut down unexpectedly. Your computer may have a faulty motherboard, broken wires, or other internal malfunctions that are preventing air from circulating correctly within your device. 

You could also be experiencing a more common problem with your system, which is simply dust buildup. A CPU Fan Error will cause your computer to turn off without warning and can be very frustrating if it occurs in the middle of an important task or presentation.

To troubleshoot your fans when not spinning, first ensure that nothing prevents the fan blades from turning, such as loose wires, cable ties, or even dust.


How the CPU Fan Error Appears

CPU fan errors typically appear during a startup or boot process in Windows. These types of errors display a message such as:

  • “CPU Fan Error” (Generic)
  • “Error: CPU Fan Has Failed” (ASUS)
  • “CPU fan error, Please check!” (MSI)
  • “CPU fan speed error detected.” (American Megatrends)
  • “System Fan (90B)” (HP/Compaq)

.cpu fan error

What to Do When CPU Fan Error Appears

If the CPU fan error appears, try to turn off the computer as soon as possible. Unplug all cables attached to it if you see smoke or sparks coming from the machine. If you can shut down the system quickly enough, your data will still be intact, and it should allow you time to repair or replace your cooling device.

How to Fix a CPU Fan Error

CPU fan errors can be resolved in several ways. The first step is to make sure that your computer is clean and free of dust buildup. Also, check your power supply connections because the fan will not work without an electrical current passing through it. 

If you’re experiencing a CPU fan error, then it might be worth taking apart some critical parts of your device and cleaning them off to remove excess debris.

If your fan is not getting power, the problem could be a blown fuse, inadequate power supply, or incorrect wiring. The best thing is that you can check these things by yourself if you know how to take apart and reassemble your computer.

Fix 1: Clean Your PC / Laptop


Too much dust, cat hair, or even human hair (don’t ask) can cause a CPU fan to malfunction. To clean your fan, you can use compressed air. 

As a first step, simply blow the air through the fan holes in your computer or laptop. If you see a lot of dirt coming out, rotate your computer the other way, and repeat the process. 

Always do this after turning the computer off and disconnecting it from the electricity.  

It is important to start with the ventilation holes. After nothing more comes out, you should also blow some compressed air through other openings. 

For a laptop, this includes the keyboard. Important places to keep clean are USB entrances, HDMI and Network entrances, and carefully, the electricity input.

Fix 2: Deep Clean Your PC / Laptop


After a surface clean as seen in fix 1, you can restart your computer to confirm the fix worked. Most of the time, this will be the case. In the rare instances it’s not, you’ll have to open the case to do a deep clean. 

If you do not have the technical experience, it may be better to bring your equipment to a professional. They know what they are doing and can also review other hardware issues for you at the same time.

If you want to do it yourself, be very careful, and prepare:

Clean Table or Desk

This means no dust, no food, and definitely no drinks. Try to have the workspace as empty as possible to avoid losing small items.

A Bowl or Plate

The screws you are working with are tiny and it is best practice to place them in a cup or a bowl. This will ensure you can find them when you need them, and will stop them from rolling off the table.

Good Light

Having a good light is important so you can see what you are doing.

No Animals Around

Cats love to play with tiny little screws and smash them off the table. Ask me how I know… They will also shed hair, when what you want is a clean environment. 

Very important to always use an antistatic device. If you are static and touch the computer, it can erase all your data. 

Once you are ready, use the right size screwdriver to detach the cover of your laptop or PC.

Carefully lift it off and locate the CPU Fan. Using the same compressed air, remove all dust and dirt from the fan blades. Try to not have any fall inside of the computer case. If it does, gently blow it away with more puffs of air. 

Do the same with the fan intake and exhaust. Be careful to not touch anything inside the computer case since the oil on your skin can cause chips to break.  

Once you visually confirm the fan is clean, place the cover on your computer and close it. This is a step that cannot wait, since the longer the interior sits in the open, the more dust and dirt will collect inside. 

Reconnect all the cables and turn your computer back and your fan should run smoothly again. 

Fix 3: Move Your PC or Laptop

If you are sure your CPU fan is clean, and yet you keep getting the CPU Fan error, there is a simple fix. You may have to move your computer to a different location.

Your Current Location Can Be Too Warm

An ideal place for your computer is somewhere where there is not a lot of external heat. It is important that the hot air can move away from the computer. If you have your computer in a cabinet, it needs to be ventilated. 

While working and looking outside is lovely, the hot sun can cause a CPU fan to work overtime as well. Make sure that your computer sits in the shadow, and try not to work in direct sunlight with your laptop. 

Your Current Location Collects Too Much Dust

If your fan keeps getting dirty and in need of a cleaning, you may want to consider moving your computer as well. Placing your equipment in a well-ventilated cabinet will protect it from dust and animal hair.

If this doesn’t fix the problem, several things could be causing it:

  • Broken wires or faulty motherboards can cause your computer’s fans to stop spinning. You will need to take it to a professional for repairs if this is the case.
  • software issue may be causing an error as well. This type of problem can be fixed easily by updating your computer’s software.

How to Fix CPU Fan Not Detected Errors on Boot

This could be due to your motherboard, PSU, or fan. Remember that your BIOS is there to support your computer’s cooling needs.  If you don’t properly adjust the settings within BIOS and use the correct connectors on your motherboard, you are failing to cool your PC properly and could be causing errors when you boot.

Attempt the steps below to locate exactly where the problem is. 

  • Verify the CPU fan is connected properly.
  • Open your computer case and examine the fan while the computer is turned on.
  • Ensure that the fan is turning and operates as it should.
  • Verify that the CPU fan is plugged into the correct header on your motherboard.  It is generally close to the CPU located on the motherboard labeled CPU_FAN1. If you do not use the right connector, your CPU fan will not be controlled by the BIOS and will not function properly.
  • If it still doesn’t work, try using the fan on another computer. If the fan starts to spin, it could indicate you have a faulty connector on your motherboard.

There are a couple of other ways to test your fan. One way is using a multimeter to test the voltage of both red and black terminals from the PSU connector.

Set your multimeter to test dc volts while holding the black and red test leads on the end of the motherboards + and – pins of CPU_FAN1 connector.

You should get around 12 volts on your multimeter. If it is lower or not registering, the motherboard connector has failed. You will need a new motherboard for the BIOS to control the CPU fan.

The other way is to use a 9-volt battery and take two wires touching them to the red + and the black  of the battery to the red and black wires on the fans connector. If the fan starts to spin, this will verify that the fan is working properly and the problem lies with the motherboard.

How to Fix a CPU Fan Speed Error

The fan must turn at the appropriate RPM (revolutions per minute) to properly cool your CPU. Your BIOS will allow you to change this factor by setting alarms if the fan turns too slowly, typically at 200 RPM or less. If your BIOS is giving you errors it may be indicative of its RPMs.  You have the capability of lowering the RPMs within BIOS, simply follow the steps below:

  • Shut down your PC
  • Press F1, F10, or the Delete immediately depending on your chipset and enter BIOS.
  • Enter Advanced Settings
  • Look for CPU fan RPM alerts
  • The default value is 600 RPMs. Lower this to 200 RPMs and SAVE changes.
  • Exit the BIOS and restart the computer
  • Working within BIOS, you can reset to default by removing all cables and the CMOS battery. Then press and hold the power button for a minimum of 30 seconds.

You should have mitigated the low limit alarm issue after lowering the RPM settings to 200 – 400 RPM and rebooting your system. If the alarm proceeds, it’s a good indicator that you have a hardware issue and need to replace the fan to prevent damage.

What Causes a 511-cpu Fan Not Detected Error

The 511-CPU error is primarily a product of hardware issues resulting from the actual fan. There are a few things to check for before you consider tossing out your current fan, though.

Fixing CPU Fans
  • Loose Connections – Ensure that all connectors are securely connected to the motherboard.
  • Dust – If you haven’t cleaned your PC in a while, it may be the culprit. Unplug everything, go inside and use compressed air and go to work.
  • Damage – Inspect the fans, heatsinks, wires, etc., as these damages could prevent your fan from being detected. Look for signs of damage from falls or wires that might have gotten near moving components.
  • BIOS – Enter the BIOS and change all settings to default.

If you find that you have exhausted all of the previously mentioned steps, it is time to purchase a new fan compatible with your CPU.

How to Mitigate Asus and Megatrends CPU Fan Errors

In most cases, when you see the error message “CPU fan error” in POST, it means the system does not detect the FAN. To mitigate this, follow the instructions below provided by ASUS to eliminate CPU fan errors.  ASUS recommends the following steps below to resolve the issue:

  • Ensure the CPU fan is installed correctly and twist screws tightly.
  • Ensure that the CPU fan cable is installed on the CPU_FAN connector.   
  • If you install a lower RPM fan, the system may not detect it, and you need to change the “CPU Fan Speed Low Limit” to 200 RPM in BIOS.
  • Save the changes and then exit BIOS.
  • If issues continue to arise, update your BIOS to the latest version.

Disable CPU Fan Speed Monitoring on Your Pc

If the CPU fan error appears and the fan is working, you can disable the alarm. Be extremely cautious in performing this step; this removes safeguards to protect your hardware. To disable, follow these directions:

  • Boot into your BIOS.
  • Go to Advanced settings.
  • Proceed to the “Monitor” section.
  • Change the CPU Fan Speed to Ignore and then confirm your changes.Cip fan speed ignore
  • Exit the BIOS and reboot.

Why Is My Computer’s Fan So Loud?

If you find that your fan is much louder than usual, this could be an issue of reduced airflow. The first solution is to ensure that you have proper airflow by checking all the vents and the fans. If you see dirty/dusty vents or fans, most likely, cleaning these with compressed air and 90% or greater isopropyl alcohol can fix this issue rather quickly.

If you have cleaned the computer/laptop or the computer is new, and you have a loud CPU fan, it’s time to look at the BIOS. The BIOS ultimately controls your fan. Resetting your BIOS to default will clear any misconfigurations and give you a better starting point to troubleshoot this issue.

  • Shut down your PC
  • Press F1, F10, or the Delete immediately depending on your chipset and enter BIOS.
  • Choose reset to default and SAVE and EXIT.Resore defaults
  • If you feel uncomfortable working within BIOS, you can reset to default by removing all cables and the CMOS battery. Then press and hold the power button for a minimum of 30 seconds.

By following these steps, your fan should be operating at the default values and making minimal to no noise.

What Causes a Fan to Make a Rattling Sound

If you have a CPU fan making a rattling sound, it is time to shut down the computer and take a look inside. In some instances, a wire might have worked loose or come in contact with one of the fan blades. Other times it could be a piece of plastic or cable tie. Most commonly, it is simply just dust buildup.

Odds are, if it’s none of the above, it might be time to replace it. The rattling sound you hear is most likely the bearing inside the fan rubbing and causing damage or already partly destroyed. If the sound just started and it’s covered in dust, try to clean it with compressed air. If the rattle noise goes away, you might have bought some time before it stops working.

What to Do if You Think Your CPU Fan is Failing

If you think your CPU fan is failing, try the following steps:

  • Check to ensure that the computer is adequately ventilated and there are no obstructions to the air intake.
  • Unplug your computer from both power sources (AC adapter and battery).
  • Remove all RAM modules and any PCI cards, such as a wireless card or TV tuner card.
  • Turn on the computer and see if you still receive an error message.
  • If the error no longer appears, turn off your computer and plug it back into both power sources.
  • Reinsert each of the PCI cards one at a time until you find which device is causing your fan to fail or until you receive an error message again (in this case, replace that particular card).

How to Clean a CPU Fan

Cleaning the fan with vaccum

Cleaning a CPU fan does not have to be a daunting task at all. It takes only a few tools and can keep your computer running for a long time.

  • You only need compressed air, isopropyl alcohol 90% or greater, q-tips, maybe a screwdriver if you don’t have a fancy thumbscrew for your side panel on your case, and a little patience.
  • The first step involves using compressed air to clean out the case and all peripherals. Take extra care to clean all the fans, heatsinks, and other components, removing as much dust as possible. I usually spray everything to the bottom of the case and then use a narrow vacuum attachment to remove the dust from the bottom of the case without touching any components.
  • Next, use q-tips with alcohol to get between the fan blades of the CPU fan and the GPU fan. Please do not soak the q-tip; simply dampen it and squeeze off any excess liquid.
  • Verify you are using 90% or higher alcohol to reduce moisture as the higher alcohol level evaporates much faster due to the lesser water content.
  • Once you have cleaned all the components, including your exhaust fans, close your case and turn on your newly cleaned machine.

The CPU fan is integral to any computer. It keeps the processor cool so it can work properly, without overheating issues that could cause errors in performance or excessive noise from moving parts.

 If the CPU fan error occurs, restart your device and see if it works. If not, follow proper procedures to fix this issue before causing permanent damage to the motherboard or other components of the computer. It may be worth contacting a local technician.

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Exploring the Different Payment Options for Solar Installations Services




Exploring the Different Payment Options for Solar Installations Services

When shopping for solar panels, consider the different payment options available to homeowners. Cash, a home equity loan or a HELOC are popular methods to finance your solar system purchase.

Solar leasing and PPAs are also popular options for homeowners looking to go solar with minimal financial commitments. Sunrun and Momentum Solar offer solar leasing with monthly payments, including warranty coverage, system monitoring and maintenance.


The cash purchase option is best for homeowners who want the full benefits of solar — energy bill savings and tax advantages. It also helps avoid the interest expenses associated with a lease or PPA.

The upfront system costs of a solar power installation can be prohibitive for some households, especially when considering other financial obligations like mortgage payments and credit card debt. However, federal and state incentives may help offset some of the upfront costs.

If you lack the funds to pay in cash, your installer, Solar by Peak to Peak, can provide financing through a third-party lender. They’ll usually offer low rates on solar loans, which are secured by the value of your home. This allows lenders to offer lower rates because they know you have “skin in the game,” a key factor determining your ability to make monthly loan payments. To explore your options for financing, use the free solar calculator. This tool runs custom solar quotes with different financing scenarios and demonstrates your potential for savings.

Credit Card

If you’re uncomfortable using a credit card, other financing options exist. These can range from personal loans to energy-efficient mortgages, which can help make solar even more affordable.

Homeowners in Highlands Ranch, Colorado, who purchase their systems in cash are also eligible for federal investment tax credits, which can save them up to 26% of the system’s cost. In addition, homeowners who own their rooftop systems can benefit from New York’s net metering policy, which credits them for the excess electricity they produce and send back to the grid, reducing their monthly bills.

If you plan to use a loan, it’s important to remember that the average total interest costs will add about $5,000 to your overall project costs and prolong your payback period by about three years on average. Fortunately, lenders tend to favor borrowers with higher credit scores, so improving your score can significantly lower your loan interest rate.


With a solar lease or PPA, green energy adopters pay a flat monthly fee for the system’s solar electricity. These payments often reduce energy costs significantly versus grid power rates.

A contract structure can differ between a PPA and a solar lease, so it’s important to evaluate the terms carefully to ensure they align with your long-term energy needs. For instance, some PPAs may include a yearly escalator that can increase monthly energy costs over time.

Other PPAs might have a fixed price plan that keeps costs low even as utility rates rise. Solar energy contracts should also clearly state whether your agreement can be transferred to a new homeowner or if it requires a buyout upon selling your home. Also, check the contract for any site upgrades that might be necessary. If these aren’t covered in the agreement, they can add to the cost of a solar installation project.


Financing is a great option for homeowners interested in buying solar panels. Many installers partner with specialized lenders to offer financing options like personal loans, home equity lines of credit (HELOC), and in-house loan programs.

The terms of your loan will depend on several factors, including your current credit profile, income, and debt-to-income ratio. You’ll generally want a lender with low-interest rates, minimal fees, and generous loan terms that align with your energy cost savings goals.

While it may take time, improving your FICO credit score is one of the best ways to lower your solar loan interest rate. Ideally, you’ll want a credit score of 650 or higher for the best results. In addition to increasing your loan eligibility, a higher credit score will help you qualify for a more attractive solar loan APR. 

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Tips For Embedding A PDF Correctly On Your Website




Tips For Embedding A PDF Correctly On Your Website

Embedding a PDF on your website can offer visitors valuable content, such as detailed product specifications, portfolios, academic papers, or user manuals. However, to ensure that these documents provide the best possible experience for your audience and don’t hamper the performance of your site, it’s vital to embed them correctly. Here are some top tips to guide you through the process.

1. Use a PDF Viewer:

Rather than forcing users to download the file, utilize a PDF viewer. This allows your visitors to view the document directly within the webpage, enhancing user experience. There are numerous plugins and tools available that can facilitate this, such as Google Docs Viewer or PDF.js for more advanced users.

2. Optimize Your PDF:

Before uploading, ensure your PDF is optimized for the web:

  • Compress the File: Use tools to reduce the file size of your PDF without losing significant quality. This ensures faster loading times.
  • Optimize Images: If your PDF contains images, ensure they’re of appropriate resolution — not too high (which increases file size) and not too low (which reduces clarity).
  • Include Text Layers: Ensure your PDF has selectable text. This is essential for accessibility and for users who might want to copy or search the text.

3. Ensure Mobile Responsiveness:

More users are accessing content via mobile devices. Make sure that the embedded PDF viewer you choose is mobile-friendly. Users should be able to zoom, scroll, and navigate the PDF seamlessly on any device.

4. Prioritize Accessibility:

Ensure that your PDF is accessible to all users, including those with disabilities. This may involve:

  • Using Legible Fonts: Stick to standard, easily readable fonts.
  • Including Alt Text: For images or graphs in the PDF, use alternative text so screen readers can interpret and convey the content to visually impaired users.
  • Logical Navigation: Ensure that the PDF has a logical flow and utilizes headings and subheadings appropriately.

5. Provide a Download Option:

Even if your primary aim is to display the PDF on your site, offer a clear option for users to download the document. This caters to those who might want to save it for later reference or those who prefer offline viewing.

6. Monitor Analytics:

Track how users are engaging with the embedded PDF using web analytics tools. This can offer insights into how often the document is viewed, how long users spend on it, and whether they proceed to other sections of your site afterward. These metrics can inform whether the PDF content is resonating with your audience.

7. Test Thoroughly:

Before making the PDF live on your site, test the embedding across different browsers (Chrome, Firefox, Safari, etc.) and devices (desktop, mobile, tablet). This ensures that all your visitors get a consistent experience.

8. Secure Your PDF:

If your document contains sensitive information, ensure it’s appropriately secured. This might involve:

  • Password Protection: Only users with the password can view the content.
  • Restricting Editing: This prevents unauthorized individuals from making changes to your document.

9. Regularly Update Your Content:

If the information in your PDF is subject to change, set reminders to review and update the document periodically. This ensures that your visitors always access the most current and relevant information.

10. Provide Clear Navigation:

If your PDF is long, consider adding a table of contents at the beginning, making it easier for users to navigate to sections of interest. Furthermore, ensure that there’s an easy way for users to return to your main website from the embedded viewer.


Embedding a PDF on your website can be a fantastic way to offer in-depth content to your audience. However, it’s essential to ensure that the document enhances user experience rather than detracting from it. By following the above tips, you can present your PDFs in a way that’s efficient, user-friendly, and accessible to all.

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Unleashing the Potential: Exploring the World of Tech Stocks




Unleashing the Potential: Exploring the World of Tech Stocks

Discover the exciting realm of tech stocks in this comprehensive article. Uncover insights, FAQs, and expert perspectives to enhance your understanding of tech stock investments.


In the ever-evolving landscape of investments, tech stocks have emerged as a captivating and potentially lucrative option for investors. With technology permeating every aspect of our lives, the companies driving these innovations have garnered significant attention from both seasoned investors and newcomers to the market. In this article, we will delve into the realm of tech stocks, covering essential concepts, insightful tips, and common questions to empower you to make informed investment decisions.

Tech Stocks: A Closer Look

Tech stocks, short for technology stocks, refer to shares of companies primarily engaged in the development, production, and distribution of technological goods and services. These companies span a wide spectrum, including giants like Apple and Microsoft, as well as innovative startups working on groundbreaking technologies. Investing in tech stocks provides individuals with an opportunity to be part of the technological revolution and potentially benefit from substantial financial gains.

Navigating the Tech Stock Landscape

1. Understanding Different Types of Tech Stocks

Tech stocks can be categorized into various types, such as hardware, software, e-commerce, and social media. Each category presents distinct opportunities and risks. For instance, hardware companies focus on manufacturing devices, while software companies develop applications and operating systems.

2. Factors Influencing Tech Stock Prices

Several factors impact the price of tech stocks, including company performance, market trends, technological advancements, and global events. Staying updated on these influences is crucial for making well-informed investment decisions.

3. Risks and Rewards of Tech Stock Investments

Investing in tech stocks can yield substantial rewards, but it’s essential to recognize the associated risks. While tech companies have the potential for rapid growth, they can also be vulnerable to market volatility, competition, and regulatory changes.

4. Conducting In-Depth Research

Thorough research is the cornerstone of successful tech stock investments. Analyze financial statements, company performance, competitive landscape, and industry trends to make informed choices.

Strategies for Tech Stock Investing Success

5. Diversification: The Key to Mitigating Risk

Diversifying your tech stock portfolio across different subsectors of the technology industry can help spread risk and reduce potential losses if a specific sector experiences a downturn.

6. Long-Term vs. Short-Term Investing

Decide whether you aim for short-term gains through active trading or long-term growth by holding onto stocks. Both strategies have their merits and require different levels of involvement.

7. Following Expert Analysis and Recommendations

Stay informed by following expert opinions, market analysis, and stock recommendations from reputable financial sources. However, remember to exercise your judgment before making investment choices.

Frequently Asked Questions (FAQs)

Q: Are tech stocks only suitable for experienced investors?

Absolutely not! Tech stocks are accessible to investors of all experience levels. It’s essential to conduct thorough research and consider your risk tolerance before investing.

Q: How can I stay updated on the latest tech industry trends?

You can stay informed by regularly reading financial news, subscribing to industry publications, and following reputable technology blogs.

Q: What’s the difference between tech stocks and other types of investments?

Tech stocks are shares of technology-focused companies, while other investments might include bonds, real estate, or commodities. Tech stocks offer a chance to invest in the growth potential of innovative companies.

Q: Can investing in tech stocks guarantee quick profits?

No investment is guaranteed to bring quick profits. While tech stocks have the potential for substantial gains, they also come with risks. It’s crucial to have a well-thought-out investment strategy.

Q: How can I manage the volatility of tech stocks?

Managing volatility requires a diversified portfolio, setting stop-loss orders, and having a long-term perspective. It’s also wise to avoid making impulsive decisions based on short-term market fluctuations.

Q: Is it better to invest in established tech giants or emerging startups?

Both options have their advantages and risks. Established giants offer stability, while startups can provide exponential growth potential. It’s wise to have a mix of both in your portfolio.


Embarking on a journey into the world of tech stocks opens up exciting possibilities for investors. From understanding the various types of tech stocks to formulating a well-researched investment strategy, this article has equipped you with the knowledge needed to navigate this dynamic market. Remember, successful tech stock investing requires continuous learning, strategic planning, and a dash of patience. So, are you ready to dive into the world of tech stocks and potentially ride the wave of technological innovation to financial success?

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