Garry's mod freezes at loading. . .

Right as I start the game it’ll freeze with Loading. . . in the right bottom corner, the blue task bar that shows progress doesn’t even show up.

I updated my drivers, I tried the -dxlevel 80 and that didn’t work, I don’t want to have to re-download gmod, any ideas?

specs:

Intel®
Pentium® 4 CPU 3.00GHz
2.99 GHz, 3.25 GB of RAM
Physical Address Extension

What is your graphics card?