I did it!!!

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I replaced the power supply inside my PC and now it is running completely quietly and smoothly! I feel even more handy than when I replaced a faucet for the first time last year. I'd never actually opened up a computer before, and never would have this time except for the incredibly helpful coaching of my buddy Julie, who helped me diagnose the problem and assured me I could figure out how to replace the power supply -- all over the phone. Thumbs down to the dude at Micr*Center who too quickly handed me the wrong supply (which I forgot to take with me on my errands today to return -- curses!) But a major thumbs up to the folks at Power-on whose website made it super easy to get the replacement power supply I needed, and shipped it to me quickly.

Now maybe next month I'll replace the DVD drive that is no longer working . . .