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Likely fix

Fix: PC is hot or the fan is loud

A hot PC or loud fan can make the system slow because the processor reduces speed to protect itself from heat.

Quick answer

Move the PC to a hard surface with good airflow, close heavy apps, clean dust from vents, and check Task Manager for high CPU usage.

Important warning

If the PC smells burnt, shuts down suddenly, or becomes extremely hot, stop using it and get it checked.

Try this

  1. 1 Move the laptop or PC to a hard, flat surface.
  2. 2 Make sure vents are not blocked.
  3. 3 Close games, video editors, browser tabs, and other heavy apps.
  4. 4 Open Task Manager and check for high CPU usage.
  5. 5 Shut the PC down and let it cool if it feels very hot.
  6. 6 Clean dust from vents carefully.
  7. 7 If overheating continues, the fan, thermal paste, or cooling system may need service.

Common causes

Blocked vents.

Dust buildup.

High CPU or GPU usage.

Laptop used on a bed, blanket, or soft surface.

Fan or cooling system problem.

What to check next

  • Check whether vents are blocked.
  • Check whether the fan is spinning constantly.
  • Check Task Manager for high CPU usage.
  • Check whether the PC is faster after cooling down.
  • Check whether dust is visible in vents.

FAQ

Can overheating make a PC slow?

Yes. PCs reduce performance when they get too hot to protect the hardware.

Why is my laptop fan so loud?

The fan gets loud when the laptop is hot, vents are blocked, dust has built up, or an app is using a lot of CPU or GPU power.

Is it bad to use a laptop on a bed?

Yes, it can block vents and trap heat. Use a hard flat surface for better airflow.

Related fixes

Fix: High CPU usage on Windows

High CPU usage means one or more apps or background processes are using too much processor power, which can make the whole PC feel slow.

Fix: PC takes too long to start

Slow startup is usually caused by too many startup apps, pending updates, an old hard drive, background sync apps, or a system that was not fully shut down.

Fix: Browser is slow

A slow browser is usually caused by too many tabs, heavy extensions, cached data problems, low memory, background downloads, or the internet connection itself.

Fix: High memory usage on Windows

High memory usage usually happens when too many apps, browser tabs, background tools, or large programs are open at the same time.

Fix: Disk usage stuck at 100%

Disk usage stuck at 100% often happens on PCs with old hard drives, background updates, search indexing, antivirus scans, or low storage space.

Fix: PC is slow because storage is almost full

A Windows PC can slow down when the drive is almost full because updates, temporary files, browser caches, and apps need free space to work properly.