This is perfectly normal and nothing to worry about. However, if the fans speed up and your PC screen goes off, this should be a cause for concern. Find out what to do if this happens to you.

Why does my PC screen turn off and fans speed up? 

If you’re wondering why your fans are running at high speed and you have a black screen, below are some possible causes:

Overheating – If your computer is overheating, it may turn off to protect itself. Overheating can be caused by several factors, including dust buildup and fans not running at full capacity. Hard drive failure – A hard drive failure will often produce strange noises from the drive itself and cause other issues such as blue screens or crashes during bootup and the use of programs on the computer.  You have a virus in your computer – If you have a virus on your computer, it can be very dangerous and slow down your system or even crash it completely. Overclocking – Overclocked computers can overheat and turn off when the temperature reaches a certain point. The cooling fans are not strong enough to cool down the CPU, so they have to shut off until the temperatures go down.

What do I do if my computer has a black screen but still running?

Apply the following basic steps first before advanced troubleshooting:

Ensure your computer case is placed in a position with free air circulation. Check if any of the fans are broken or clogged with dust or debris, then clean them out or replace them as needed. Monitor the fan speed and adjust accordingly. Check for any loose wires or cables that may have come loose over time due to wear and tear. Disable any overclocking software.

1. Check for Windows Updates 

2. Update graphic drivers 

While this method works well most of the time, not every user enjoys going through multiple steps to update a driver. A good number appreciates a good driver updater utility that can do the work automatically. DriverFix is the tool you need to comprehensively scan drivers from its huge database and replace them with the correct ones.

3. Rollback previous graphic drivers 

4. Reinstall your graphic driver

5. Run a virus scan 

6. Uninstall/disable antivirus software

7. Perform a clean boot

Another option we recommend as a last resort is resetting your BIOS. Your BIOS controls devices such as hard drives and processors, performs system initialization and testing, and provides access to advanced setup features.  Resetting your BIOS will clear all of your customizations and settings. This includes things like overclocking your processor and changing the boot order. You should only reset your BIOS if it has been corrupted or tampered with or if you need to troubleshoot a hardware issue preventing the system from booting properly. That’s all we had for this article, but be sure to check other related articles, such as when the fan keeps spinning. Let us know which solution fixed the issue in the comment section below.

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