Garry's Mod Suddenly Shutting Down

[Merle]

Does it say hl2.exe has stopped working out of curiousity? Cause honestly, Arny is right. Your graphics card has got to have more than 512 MB of data on it. This happened to me when I had a Nvidia GeForce 8800 GT, I later upgraded to a Nvidia GTX 560 ti EVGA and it was fine. I now currently have a Nvidia GTX 750 ti EVGA and I haven't crashed since my GeForce 8800 GT.

Graphics card has 2 GB, CPU is very good (It must be good enough for garrys mod because it costs 400$)

Is it possible for me to have the EXACT graphics card and CPU so I can figure out what the problem is?