PC shuts down after windows logo

[mikespr]

AMD FX(tm)-4100 Quad-Core Processor 3.6 GHz CPU
Kingston HyperX 8GB (2 x 4GB) RAM
GeForce GTX 560 Ti GPU
m5a78l-m lx plus MOBO
600Watt PS

So the problem began a few months ago. it was a random shut off here and there. i was given 2 new parts after the problem started. it was the power supply (old one was 455W) and a new GPU (old one was gforce 9800). to think of it the problem might have started when i got a new motherboard cpu and ram. so im pretty sure one of those 3 is the problem.
bare in mind that it would shut off aspecialy during game play but still only doing it once, twice a day. Now it shuts off while watching a movie or even chatting on facebook and when i try to start it, it just shuts off on me during the windows 7 logo loading again.
it gives me 2 options to boot from: normal, and repair mode. if i go normal it just shuts down. if i repair it not always but sometimes fixes the problem for an hour or 2. but sometimes it just shuts off again.
I play this game of cat and mouse for about 4-5 tries and get it to load. it's like an old car.

forgot to mention i also went from windows vista 32bit to windows 7 64bit and problem is still here

my computer uses 4GB ram for hardware reserve which i don't mind. i tried to reset the bios from a backup and it still keeps screwing with me.
it's the DAY to buy parts online so im thinking of spending less then 100$ to fix this problem quick and easy.

anyone?

 

[fantomdark]

Does it Shut completely down or restarts on its own?

 

[RealBeast]

Have you run memtest86+ on your memory to insure that it is not the issue? http://www.memtest.org/ The program is free and you burn it to a CD and boot from the CD so you don't need a totally working system to use it.

If it passes two or three complete cycles it is not the issue.

 

[dalaran]

Also check temperatures readings for the CPU, overheating might cause the whole PC to shut down to prevent damage

 

[mikespr]

i got core temp. turned it on and played a game. min.39C max 89C
current cpu temp 83C. do u think this might be the problem? should i just get a new heat sink?

 

[RealBeast]

89C is too hot for that processor. The recommended upper thermal limit IIRC is 71C, and I think that the shutdown is at 90C.

I would at least reseat the current heatsink with a *thin* smooth layer of thermal paste, and if that doesn't bring the temps down get a new heatsink. Also your idle temp of 39C is pretty high for idle, so check your case fans and make sure there aren't a pile of dust bunnies in there.

 

[electronian]

How big is the new power supply--750W?

 

[mikespr]

i got some numbers if anyone wants to take a look
http://postimage.org/image/rkhanhnzj/

 

[Lt Priboi]

I had something similar until one day, it sh@#$%^t itself.
Found out, it was the registry. Lost the lot!
It gave me the opportunity to go through the motions of repairing etc....
but, all in vain.
Cost me a good penny to get it fixed, whereas, it happened a couple of times.
Do you think I wasn't shirty!!!!!!!
Something from the internet I think??????

 

[RealBeast]

i got some numbers if anyone wants to take a look
Like]http://postimage.org/image/rkhanhnzj/

Like I said, too hot ( http://www.cpu-world.com/CPUs/Bulldozer/AMD-FX-Series%20FX-4100.html ). If you have an aftermarket heatsink, I would remove it, clean off the thermal paste and re-apply a *thin* smooth layer or get a new HSF.

 

[ekuma mike]

Does it Shut completely down or restarts on its own?