Left 4 dead 2 crashes my computer....

[jonathanx54]

I just built this computer over the holidays and runs fine but when I play left 4 dead, it crashes after about 30min to an hour and has to restart.

These are my computer's components:

Motherboard: http://http://www.newegg.com/Product/Product.aspx?Item=N82E16813128392&Tpk=MA770T-UD3P
CPU:http://http://www.newegg.com/Product/Product.aspx?Item=N82E16819103674&cm_re=955_debeb-_-19-103-674-_-Product
RAM:http://http://www.newegg.com/Product/Product.aspx?Item=N82E16820220440
Hardrive:http://http://www.bestbuy.com/site/Seagate+-+Barracuda+1.5TB+Internal+Serial+ATA+Hard+Drive+for+Desktops/9539476.p?id=1218121171269&skuId=9539476&st=seagate hardrive&cp=1&lp=33
Power Supply:http://http://www.bestbuy.com/site/Corsair+-+750W+ATX+CPU+Power+Supply/9358303.p?id=1218090912061&skuId=9358303&st=power supply
Graphics Card:http://http://www.bestbuy.com/site/XFX+-+ATI+Radeon+HD+4890+1GB+DDR5+PCI+Express+2.0+Graphics+Card/9566025.p?id=1218125775469&skuId=9566025&st=radeon 4890&cp=1&lp=1
Operating System: http://http://www.newegg.com/Product/Product.aspx?Item=N82E16832116754

I downloaded an application called HWMonitor, that said my CPU was around 48celcius and GPU at 53celcius. I dunno if this info helps.

Also, my power settings use to be on balanced, but I set it to High performance. That might of been the problem but I woulda thought this computer could handle it.

Please let me know if anyone can tell me whats wrong.

 

[Geoff]

Please don't double post.

 

[Dazzeerr]

None of the links work.

 

[jonathanx54]

Sorry, I wasn't paying attention to what category I was in and forgot that I posted already.