Grinding noise in tower

Grinding noise in tower If everything on your computer is working fine then it is probaly a fan put your ear in the back of your tower near the power cord and see if you can hear the grinding noise better if you can then your power supply's fan is going out if not its probally one of the inside fans in your tower open up your tower and see if you can find which fan it is if you dont want to do this you should probaly get a tech to look at it it's a pretty cheap fix and it can save your computer from heat dammage