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How to Keep Your PC Cool and Prevent Overheating

Last updated November 6, 2026 · By the PC Guide Info editorial team

Computers produce heat, and when it cannot escape, performance drops and components age faster. Good cooling keeps your system quiet and stable.

Signs of overheating

  • Loud, constantly spinning fans.
  • A hot case or keyboard.
  • Sudden slowdowns or unexpected shutdowns.
  • Games or programs that crash under load.

Check temperatures

Many motherboards and graphics cards include software that shows temperatures. Generally, a CPU that stays below about 80 degrees Celsius during normal use is considered comfortable, though exact limits vary by model. Check your manufacturer's specifications.

Improve airflow

  • Keep the computer away from walls and out of enclosed cabinets.
  • Do not block laptop vents. Use a hard surface or a stand.
  • Make sure the case has fans that bring cool air in at the front and push warm air out at the back or top.

Clean out dust

Dust is one of the most common causes of overheating. Clean fans and filters regularly. See our guide on cleaning your PC safely.

Check the room

A hot room makes everything harder to cool. Avoid direct sunlight on the computer and keep the room ventilated in summer.

Software tips

  • Close demanding programs you do not need.
  • Update graphics drivers and system firmware.
  • Use the Balanced power plan unless you need maximum performance.

When to seek help

If the computer still overheats after cleaning, the thermal paste or cooler may need replacing. If you are not comfortable opening the case, ask a qualified technician.

This article is for general information only and is not professional advice. Features, prices and menu names may change between software versions. See our disclaimer.