I'm hoping someone has an idea what my problem is as I've seen this problem on other forums so maybe I can help someone else. I've had an AMD Athlon 2800 + Asus A7n8x-e motherboard setup for about two years now that was running windows 2000 with a geforce 4 graphics card and a gig of ram. 430 watt power supply. A few months ago I bought a copy of XP and upgraded. Still, several months of smooth sailing and lots of World of Warcraft playing. About two weeks ago the monitor started losing the signal. I would start the computer and right after xp was going to load and have me log in the monitor would go to standby, as if it lost the signal. Over the course of two weeks it started happening more often. Sometimes I could get logged in and have a whole day of usage out of the computer including playing games or other times I'd have to reset it fifteen times before it would let me use it for hours. Over the last couple of days the loss of signal began happening while playing games, or web browsing. A little more random than at the xp startup point. I swapped monitors, bought a new graphics card and I'm still dealing with the issue. Today I was getting a one in ten chance that the computer would get to windows without losing the monitor signal. Then, cross my fingers, would get some gaming time. Today I gave up and waited for my new vid card to show up. After installing the Geforce 6800gs, and reinstalling drivers for the MBoard, direct x, vid card, bios, nforce drivers, it still randomly resets. Very often when switching to a game, and after a couple of minutes of desktop/web browsing. Because this problem has gotten worse over time I'm assuming some hardware has degraded in my system. I had plenty of time with win 2000 and several months with xp with no problems. I'm now looking at replacing my cpu/motherboard and power supply as that's all I have left to replace. Oh, two other oddities. Twice during my restarting to get it to work the computer would not only lose the monitor signal but would shut down and restart at the same time. Only happened twice but makes me think something weird is going on. I also noticed that when the monitor loses the signal I hear the harddrive turn off and the cpu working light goes on full time. Not sure if that was happening all the time. Earlier it seemed the computer was running, but I'd lost the signal. Sign of things getting worse? Other thing I noted is that the vid card I got requires a 300 watt power supply. I have a 430. I had to unplug two hard drives and two fans from the power supply to get the computer to boot properly. It kept failing around the xp time to boot. I'm assuming I need a bigger power supply? Any thoughts appreciated. I'm gonna talk to my more tech savvy buddies at work. Would be nice to nail this down to one component. I'm assuming it's hardware failing since I got so much time out of the setup for so long.