I just recently moved and started having problems with my computer as soon as I plugged it in. Actually it started a few months ago, I would try to wake my computer from sleep mode and it would spin the fans then not come out resulting in me having to do a hard reset. Same thing if I would try to restart my computer within windows, just wouldn't restart.

Anyways I hooked my comp up, it would run for a few minutes then shutdown as if it was overheating. I check out core temps on cpu and it's running at 35c. I tried replacing the power supply at this point and continued having the same problem of sudden shut downs. Next I tried swapping out the ram, problem persists. Then all of a sudden I turn it on and have some vertical broken grey lines across the screen during startup and red vertical bars across my desktop in windows and it's telling me I don't have a nvidia video card installed.

At this point I go pick up a new motherboard, asus p5n-d. Install motherboard, make all connections, go to boot up and it's as if the power supply is screwed, board doesn't seem to be getting enough power and fans aren't spinning at speed they should be, the fan for the power supply even is not GOING at normal speed, and the blue lights inside it are flickering as if it's surging power. I never get any video or anything at all. I do a bench test with no case and motherboard sitting on the motherboard case, only power supply, video card, 1 STICK of ram and cpu/heatsink connected, same problem again so it's one of these components now.

I then rebuild computer with old motherboard and minimal components to boot up, now power supply is doing same thing with this board as well.

At this point I have no idea what has happened and why it seems like I have a power supply issue again.

Components are:

CPU: Intel Core 2 Duo e6550
MB: ASUS P5N32-E SLI Plus
Ram: 2x1GB DDR2 SLI Ready pc6400 I believe
HD: Western digital 500GB
Power Supply: OCZ 700W
Video: BFG Nvidia 9600 GTX

Any help that anyone can give please do because I'm lost at this point. I will try TESTING power supply tomorrow to see if it's giving off the correct power.Seems to me you have started to transfer mobo components onto new one(back and forth) in a way that you ain't sure that all or some parts are not RELIABLY usable or bad. Make sure when swapping form one mobo to another, they are compatible and working. You must choose also between mobos to use and troubleshoot. If one gives a better output than the other(less issue), then you could start making a better status to post on what still needs to do. Before starting up, try flushing out power from PSU by "holding down Power On button for 30 seconds" with power cord unplug. It may also help in draining(reset) start up information stored from memory chip.

*Never use Hibernate or Sleep mode