Why is my PC making strange noises?

1. Check the fans. Since most of the time a loud noise coming from a PC is caused by a malfunctioning fan, be sure to check the fan before anything else.


2. Verify temperatures. Seeing if the temperatures of any components are too high to touch is another important step.


3. Clean out dust. Dust build-up can cause overheating and loud noises, so try using a compressed air can and cleaning out the PC.


4. Evaluate HDD. If there is grinding or clicking, the hard drive may be failing, and should be evaluated and replaced if needed.


5. Contact professionals. If none of these steps solved the problem, reach out to a professional computer technician.