Steam: Lockup, forced to restart computer

[theyarecomingforyou]

Originally Posted by Cutter

I have the same problem myself and it's not cool. This is the only game on my PC that actually forces me to do do a hard boot...not cool at all. From everything I've gleaned the people with these problems are primarily Vista 64 bit users - which I'm using as well.

I'd like to point out that I'm a Vista64 user and have had absolutely no problems with stability. I'm using an ATI 4870, whereas I notice most people with problems have an nVidia card. Sounds like a graphics driver issue.