my computer shuts down when playing video games

Hey guys. Just registered, hello.

I had a new computer 1 month ago and never had much problems since then.
But my computer shuts down after 1-2 hours of skyrim. It's really annoying cuz its a new computer. I didn't experience shutdowns with other games (maybe because of not playing 1-2 hours).

Video Card : Asus Gtx 470
Processor : Amd FX x8 8150
Psu : Thermaltake 700w Litepower

Never did overclock.

And i researched a little bit about this. And ran some tests according to it.

I ran furmark benchmark 1680x1050 with no aa. %100 fan speed. My gpu heated to 84 celcius degrees top.

I did prime95 test, cpu didn't heat above 58 celcius.

I did them together (infinite furmark test), thinking it was about psu
and in 3-4 min my gpu made 101 celcius. I didnt want to risk it and closed the program.

Now i don't know what causes it. Btw when it shuts down, i can't open it without unplugging the power cable from computer (thats another reason why i thought it was about psu).

Please help

101c is pretty dang hot, try blowing out the cooler on that card?

Actually, it never goes up to 101 in games. In skyrim, i never saw it going beyond 80. just benchmark pushed it really hard. And i read that this card's max temp is 105. But i'll check anyway

Furmark is very unrealistic. 80 degrees is fine for gaming. But what fan speed is it running for those temps? The 470 is a very hot running card.. Your CPU temps are fine for the moment. Just don't try to OC. Your temps are at/near their limit already. (For the CPU).

I'd give the 470 a good clean out. What card specifically? Do you have a link? Only 1 month old suggests to me the 470 is used? Or did you buy the system pre-built?

We need a little more info on your system. Motherboard, Case, RAM, Hard drive/SSD? Just to cover all the bases..

You can run Unigine Heaven in a window and have GPUz's sensors page going at the same time. That's what I would do.
It's not quite as large a load as full screen, but it's close.

My fan speed control chart: http://i50.tinypic.com/2whp751.png

Actually i said its new because i changed all the parts except video card. I bought it in November 2010. Here is a review about it : http://www.legitreviews.com/article/1287/1/

My motherboard : http://www.asus.com/Motherboards/AMD_AM3Plus/M5A99X_EVO/

My case:http://www.thermaltakeusa.com/Product.aspx?S=1321&ID=1877

My ram: Patriot Gamer 2 Series, 8GB (4x2) DDR 3. I don't actually remember what mhz is it. So i uploaded a pic from cpu-z. I couldnt understand actually, i hope you can. http://i49.tinypic.com/15r18i1.png

My hard drive: Seagate 3.5 1 Tb Barracuda Sata 3.0 64Mb Cache 7200Rpm

Edit:
Btw i did unigine heaven test at these settings :http://i49.tinypic.com/v8351h.png

And i monitored it with gpu-z. Here is the max readings (opened gpu-z first time with this heaven test): http://gpuz.techpowerup.com/12/08/13/5d.png

Clean out your gpu.. if you haven't already. Those temps with that fan speed is ridiculous! X.x that noise must be killer lol.

Well i've tried to clean it today. Its not that dusty and i dont have compressed air. So i blowed it with a blow dryer. I'm getting compressed air asap.

But you think that its just temp? my pc didnt shut down even in 101 c. Isn't it possible this is a different issue?

I'd check the PSU voltages under load with a multimeter.

http://www.overclockers.com/forums/showthread.php?t=403837

Well, i dont have that multimeter thingy and today, when playing skyrim, i alt-tabbed, gpu heat went down to 49 or something, i alt-tabbed back, played 10 sec and it shut down again. I think this means its not about gpu. I'm almost certain its psu, but isn't thermaltake litepower 700w enough? When i bought the parts, guys there told me its enough for both cpu and gpu you think its broken i assume?

It should be enough, if it's healthy.

Thanks guys. I'll be informing you with latest news if something happens