Windows 7 64 bit. Installed win 7 professional fall 2010. Service pack 1.
Intel (R) Core (TM) 2 Quad CPU Q965 @3.00 GHZ
Had trouble with computer in March 2011 and eventually had to ship to HP with extended warranty (which ran out march 2012). They installed new motherboard and RAM. We upgraded fan (there are 2) and took RAM from 2GB to 8GM in May 2011. Has been running great, no problems til this weekend. It will shut off like being unplugged. I can't get it to stay on very long before it does it again. I am getting the sign on screen and the desktop shows up. I can do about 1 minute of operations before it goes out.
Opened up the tower and the fans are running, nothing feels hot.
I believe it has to do with hardware, so while I await other suggestions I am going to try replacing the RAM. Then checking the fans.
This is the boss' PC and when she ain't happy.... LOL