I have win XP home, with all the updates and svc packs up to date. I've run Spybot and Ad-Aware several times already. The problem started when I was playing Battlefield 1942. I left it playing for about an hour unattended because I had visitors come over. When I came back, the game had minimized and the desktop was showing, and the game music was constantly skipping. I couldn't do anything in windows, and I tried to go back to the game, but the screen just went black, so finally I turned the power off. Now everytime I turn on the computer, the CPU usage goes crazy going up and down between about 20-90%. Whenever I start Windows, only some of my icons work, the rest are placeholder graphics, and if I try and start a program it loads really slowly. If I try to restart the computer, I get an error message that explorer.exe encountered a problem and needs to shut down. Then of course the computer hangs and doesn't shut down, and I have to turn off the power. Occasionally it will shut down normally, but nothing I can figure out will fix this. Oh, and I did the system restore and rolled my computer back about a month, and still have the same problems. I would appreciate ANY help!