Well I have been having some problems with my computer, it would shut off while playing video games. I replaced the motherboard, replaced the CPU, replaced the power supply, replaced the ram, if I ran two fans directly onto my CPU I could play diablo II, mechwarrior 4, battlefield 2 without the computer shutting off but I can only run my CPU which is an AMD XP 3000 at 1300mhz otherwise the system shuts off before it can even boot into windows. Then I was playing Medal of Honor Allied Assault and the computer would shut off after 5-10 minutes. I got Prime 95 and I would run it and the computer would shut off on every torture test after about 2-4 minutes. I would watch the CPU temperature rise from about 45 to 46 to 47 then 48 then wham just shut off. My voltage didn't change just my temps. I installed water cooling now, a custom kit from Danger Den and it seems to be working good, keeps my temps at about 42 celsius, I run Prime 95 and i heat up to about 47 after 10 minutes and comp doesn't shut off but if I try and turn my CPU up to the clock speed it should be at my computer still does the same thing, shuts off after a minute, no time to even see my temps go up because I barely get into windows. I haven't run Prime 95 long enough to see if it will shut off my CPU when it reaches 48 or 49. All I can think of now is my 550w power supply is a cheapo one so I am getting a 580w Antec, hopefully that might be it, otherwise all I can think of is my Radeon 9700 video card. Any ideas?