If I load up cs_militia in Gmod, then eventually it crashes with the error “Failed to lock vertex buffer in CMeshDX8::LockVertexBuffer”. I’ve started to think that it happens when you GPU tries to render a certain area of the map. Because it spawns you in random location each time, it either crashes instantly or after wandering around for about 10 seconds. I have a Core i7 920 with Win 7 64bit and 9800GT (512MB, not the new 1GB ones). My old computer also had this issue. I think my GPU is the problem because it’s one of the few things I saved when I built my current computer.
Just checked, this doesn’t happen in CSS itself.
Did you reuse the hard drive in your new build? It could just be corrupted data in Gmod. Try reinstalling. I see no reason for the crash, your computer is top-of-the-line.
No, I used a new hard drive in my new system. Like I said, it might be my graphics card. I had it in my old computer that had the same issue.