How to fix CPU Fan Error on Windows 10/11? The CPU Fan Error usually occurs when you’re trying to power on your computer or laptop, or when the system is on start-up.

If you see 511 CPU Fan not detected error during boot on a black screen, then this guide will help you resolve the error. It could be a hardware issue.

Hardware devices such as laptops can develop issues with a CPU fan. So, during the startup, users can see an error, bearing the following message – CPU Fan error: Press F1 to run setup.

Your Computer is Too Dusty Did you know that a slow computer can sometimes be due to dust? As you use your computer, the fans blow air through it to keep the components cool.