About two weeks ago the computer took a power surge during a lightning storm. Everything seemed fine, but I couldn't connect to the internet. Checked the modem and it was dark and not getting any power. I called AT&T and they said my warranty was still good so they sent me out a new modem.
Went to hook it up and the computer wouldn't accept AT&T's ip address, so I called customer support. One of the things that they had me do was shut down my PC all the way after the new modem was connected. No change. After three hours on the phone and talking to 2 or 3 people they said that the problem was in my computer. I called a couple of computer stores and they said that one of the boards was probably fried.
I finally got around to taking the side off of the computer, but before I did I unplugged it from the wall. Everything looked ok inside so I plugged it back in. All of a sudden the modem starts up and everything starts working correctly. I just sort of sat there for a couple of seconds and stared at it.
Then the little light bulb went off in my head. When I bought the computer they told me that using the start button to turn off the system only shuts off certain things. To really cut the juice I need to unplug it or use the master switch.
Next time it storms here everything is getting unplugged.