Gmod crashes right after start

Gmod crashes right after start.Please help, just bought into Steam, and it does not work, help

Post your system specs here so we know if your computer meets at least minimum requirements of the game.

Minimum requirements:

OS: Windows® Vista/XP/2000
Processor: 1.7 GHz Processor
Memory: 512MB RAM
Graphics: DirectX® 8.1 level Graphics Card (Requires support for SSE)
Hard Drive: 150 MB

Processor: Pentium 4 processor (3.0GHz, or better)
Memory: 1GB RAM
Graphics: DirectX® 9 level Graphics Card

Reinstall Gmod or Steam?!? <- Bad answere :smiley: