OK, thankgod this ain`t my new quad core givin me crap. *knock on wood* thats been running great. This is my old main,ran UO great and alot of other games but it did have its limitations. Still,was a great comp for a second and am just looking for general thoughts as to what you think may have happened. Maybe it`ll point me in the right direction. At this point, I`m not really sure what to think aside from maybe a mobo problem or my cpu fried out. Heres what I`m workin on: Mobo is Geforce 6100M9 AMD Athlon 2.4g 120g seagate HD 3 g ram Nvidia 7600gs 512 vid card I don`t have my cd rom hooked up,basically unplugged all peripherals when I was trouble shooting the PS. At the beginning the first sign of trouble was after boot up in the morning. I went to play a game and during that time when the monitor (old brick of a 19 inch) clicks and switches between windows and gameplay........ my computer shut down. No warning,just BLINK....OFF. So I turned it back on,it rebooted fine and thought maybe a glithc or hiccup. Tried my game again and BLINK same thing OFF as soon as it switched between screens. After that I thought it might be a monitor problem since this cord has always been tempermental.Sit just right and everythings green,that type of stuff. So,swapped out to a spare and rebooted. Everything seemed fine,tried the game BLINK same thing. I`m thinkin WTF.... OK either vid card is takin a dump or maaaybe PS? Just changed it so who knows..... Next I took out the vid card and rebooted using the integrated card. Rebooted nicely and redid my drivers no sweat. I tried my game and it played it for a couple minutes than the damn thing shut off again without warning. I next removed all peripherals and even changed the power supply. No soundcard,no cd rom drive and a different PS that I know works well,kept it for a spare even though its just a 400. After that it ran decent again,it played the game but I didn`t push it because with the onboard card it just plain sucked to play it. I thought I would do a virus scan while it was staying on. Long story short, it will not stay on long enough to complete a virus scan OR to complete a scandisk after a reboot. It WILL stay on alllll day long and even stayed logged into my game for 2 days. I even had my 512card back in and everything was clicking right along..........except for the fact that if I ran a scandisk or a virus scan it will shut down without warning.Hmmmmmmm! So here I am last night. After it running for days,playing my game for days with no issues....my virus scan decides to run a scan. OK,all my problems are not even in my thoughts, so I let it go and even started a scan on my main pc while I was at it. Well, 15 minutes later........ its off. Only difference now is it will not come back on. Well to be more accurate,it will turn back on....all the fans are running,the HD`s active, no beeps during startup and from all indications everythings fine. But it will not start the monitor. The monitor light stays yellow all the time,won`t go green. I disconnected my 512 card and went back to onboard.....same thing. Fires up,everythings on but no monitor.Tried 2 vid cards and now 2 monitors. I tried to be as precise as I could be as to the steps that I took and the steps in how this thing degraded to what it is now. I even thought it maybe a ram problem so I yanked em all out and tried starting with just one stick....than another,maybe that stick was bad,lol..... tried everything and it seems like it just puked rtf out to me. Any thoughts?