BSoD's on skyrim, bad on shogun 2

[hrath]

So I am plagued with problems when I play some games.

I can run ultra on empire and napoleon total war, however when I play Shogun 2 on max settings it doesn't allow me to move and makes the scrolling etc... much slower (like 1/100 the speed).

I also get BSoD's whenever I play skyrim, even though my severaly underpowered SONY VAIO can play it for up to 3 hours without problems.

any help please?

system stats:

CPU: i7-3770 (NOT OC'ED)
GPU: GTX 480 (NOT OC'ED, performs as it should when I used FurMark)
600W (just got an xfx pro 850w, will install in the next day or 2.)
16 gb Ram
mobo: GIGABYTE GA-B75M-D3H (I know, pretty sad -_-)

 

[Bejusek]

It looks like your PSU. After you switch to this XFX all problems should go away. GTX480 is very power hungry card and your current power supply probably can't handle it.

 

[hrath]

Best answer selected by hrath.