I have a client with a Dell GX-270 (P4, 256 meg, running XPP) that wouldn't start unless it was unplugged from the wall and then plugged back in. If she doesn't follow that proceedure she gets the Dell flash screen at startup for about 3 seconds and then the screen goes into standby mode and the computer just sits there.
It is fully updated (Windows and hardware) and there are no "?"s in device manager.
I was thinking the ps (max power of 210W) might be the source of the trouble so I changed the ps with one with a max power of 200W. The computer displays the same symptoms; boots up sometimes, not others. I managed to do a memory test on it and there were no errors.
Just now it booted and I got into Windows just fine but after 10 minutes the machine shut down on its' own.
I'm at a roadblock here as I don't know what else to check. Any suggetions / assistance would be greatly appreciated.
Thanks in advance