Gmod closes randomly..

When I open GMod it closes after about 10 seconds. Does anyone know how to fix this?

[editline]04:01PM[/editline]

Anyone?

More memory (it’s a big pump of memory (like windows vista :D))

Well Do you mind telling us the specs of your computer your trying to play GMod on?

Graphics card: Nvidia GTX 275
RAM: 4gb
HDD: 1000 gb

Well I play GMod fine… I fixed it by renaming the gmod folder and joining gmod again. It must have been some server I joined.