Windows 7 64 bit crashes.

It could very well be that its Utorrent, but even running COD4, which I also run...doesn't mean Utorrent isn't "touching" something special and causing an issue. I had the same thing happen with another what I though benign app and everything else worked expect it! Networking intensive apps, like the previous poster stated, will be a recurring bug.

At this point...and considering that amount you've put into other hardware on your system its worth a try. Its like having a Porsche running with a 2 banger under the hood, it'll run on a 550W but that is by no means recommended, especially considering that is one area W7 is sensitive about.

...then of course, for what ever goofy reason it could be Utorrent on your machine?!?

Keep us posted.

BigR

Well I've deicided to experiment a little, I saw that nvidia released some new graphics cards drivers. I updated mine to them and as a little test left uTorrent running.

uTorrent's been on now for about 5 hours with no crash.

So I'm at a loss.

550w is more than enough power though for my system. People go overboard with power supplies - you don't need half of what people suggest.

A good 550w is much better than a crap 800w.