noisy power supply?

Linda in Iowa

Reputable
Apr 21, 2014
1
0
4,510
Have been hearing a noticeable buzzing/whirring sound from the computer. opened it up and cleaned the dust from all the fans. Restarted it and the noise started right away and I am thinking it is the power supply. The noise is intermittent meaning it is not doing it at all right now. This is a Windows 7 computer now 4 years old. My papers say the supply is a WPower 480 watt. If you think it is the power supply what are the recommendations for replacing it?