Garrys mod Graphics problem

When i open gmod up i set the video settings on high models textures shadows etc…
But when i play the game it automaticly changes to low settings directx version at the corner is set to 7 and etc… and i cant change the settings to high again :frowning: any ideas here is my pc specs

Processor: Intel® Core™2 Quad CPU Q9400 @ 2.66GHz
3582MB RAM
NVIDIA GeForce 9600 GT

EDIT: It works now i reinstalled steam now thats strange :smiley:

Update your drivers.

all ready did that i updated video cpu motherboard drivers but no use