Wow... really constructive comment there bpogdowz... also for the record the graphics have been upgraded in the PC version so it's not 'just a console port'.
Anyway... onto something a little more constructive.
First, in Steam, right click on SF4, hit Properties, and then under Local Files click on Verify Integrity of Game Cache. This will rule out any file corruption causing issues.
Second, use a program like SpeedFan to check your temperatures while gaming, overheating graphics card might cause the crash.