Awm Issue

Well after installing windows 7 on my computer and installing the game i noticed a few bugs.

1) The Option menu In-game doesn't let me save the video tab, the sound and the rest are fine. When i click save after the save has been sucessesful the brightness turns all the way to 0 (only way to fix it is during game pressing home on keyboard) and it doesn't really save the Screen resolution, Effects and all that stuff.

2) I always seem to lag for some reason even tho my ping is 120 or less and my fps are 20/30 which were actually fine when i had vista several days ago.

3) Idk if this is new or not but when i zoom in with my Awm i can't really move the aim, it moves but at a really small about is as if once i'm zoomed in the mouse sensativity goes 0, but as soon as i zoom out its back to normal.

Note: i didn't make any hardware changes to my desktop just the vista to 7. I hear that xtrap wasn't fully compatible with w7 from some1 but its not really true unless a mod or a gm says so.

My question... Will i be able to play CF again... with out the bugs?