Garry's Mod crashes after the loading screen.

Computer Specs
Processor: Intel® Pentium® D CPU 3.320 GHz
RAM: 2.00 GB
Graphics Card: Not sure.
Operating System: Windows Vista (32-bit OS)

Whenever I run Garry’s Mod it runs seemingly perfect until straight after the loading screen. as soon as the loading is done, the screen goes black, the window doesn’t respond and I’m forced to Ctrl + Alt + Delete and end the program.
Help?

About the GC: My dad (who doesn’t live here anymore) bought the card and it isn’t showing up in computer properties. Could this have something to do with it?

If you look carefully you might see a name on the card. NVIDIA and ATI tend to show off their names. Just don’t break it.

Or…

You could run dxdiag and it should show something for the video card.

Or…

You could go to Device Manager and under “Display Adapters” it should say something about the card.

The last two are far easier and safer to do.