Once I got my computer back, I began to notice a strange sound coming from it. It would start out as a semi-loud whizzing noise, then after 2-3 seconds, it would escalate to a louder noise that was like a whizzing-vibrating sound. After a couple more seconds, it would go away only to start right back up again.
I can stop the sound for about 2 seconds by punching the top of the case above the power supply. I know I shouldn't do that, but the sound is so annoying, it drives me crazy. I've read up other sources for information about it, and learned it was either A. Dust in the power supply fan or B. A failing hard drive.
I got a can of canned air and aired out my computer. I was a little worried though of sticking the nozzle inside the small power supply holes and blowing, even though I had detached all the cords and power cables. After giving it a good clean, I reattached everything and started it up, only to have the horrible sound began AS SOON as I turned on the computer.
Any help would be greatly appreciated!