I've had a problem for almost a week now.
My computer keeps shutting down, without any information.
It started when I added two small fans into my new Antec Twelve Hundred case. I used to have a horrible case, so I decided to buy a new one.
So the computer worked without any problems for a couple of days after I put all the components into my new case.
After the optional fans were added, the computer shut down. This didn't happen immediately. It was almost 2 hours after the fans were installed.
So then, I thought it was a random shutdown problem. The next time I put it on, it started to say something about the memory (MemOK! light blinking and stayed on). Then a little later, after the computer started to work somehow again, a blue screen popped up, saying "STOP: 0x0000007E (0xFFFFFFFFC0000005 ...)" etc.
So, I bought a new PSU, thinking that the computer can't handle all the components. When I changed the PSUs, a small part fell out of the PSU itself.
The older PSU was 650W, and the new one that I'm now using is 1000w. (dont know if you are needing this information).
The problems kept coming up (MemOK! light burning, shutting down randomly, without any information).
And when the computer shuts down, it looses the connection to the screen and the mouse and keyboard (in fact all the stuff that are connected to the USBs).
So the next thing I did was installing windows 7 64bit on my computer. (I used the same OS as I had used earlier) Still the same problems keeps coming up. Not the blue screen though.
And one of the weirdest things is that if I won't do anything (or let any electricity into the computer) on the computer for +5h, the computer will work properly for ~an hour. If I keep shutting it down, or it will shut down by itself, the problems keep coming up easier.
Could it be a memory problem? Motherboard problem?
Here's the components I use
Motherboard: Asus M4A77T
RAM: Kingston 2x2gb DDR3
PSU: Nexus 1000W
GPU: Palit(?) Geforce GTX 460 1024MB GDDR5
CPU: AMD Phenom II X6 1055T (@ 3.3GHZ)
I've overclocked the CPU a little.
The temperatures are very low, so it can't be a temperature problem.
There's no dust in the case, or anything that could possibly harm the use of the computer.
THANK YOU SO SO SO MUCH IF YOU'RE ABLE TO HELP ME! :)
(Oh, and sorry for my bad english!)