AAAAAARGH, multiple games not starting on windows 7!

Guys, for the past three games i've downloaded no games seem to be working for me, I'm using a EVGA motherboard, i7 920 standard, gtx 285 and 12g of crucial ram.

COD modern warfare and fear 2 work just fine for me, but the last three games i got don't, borderlands, need for speed shift and battlefield 2 bad company, and they all give me the same reaction, three second pause followed by (filename).exe has stopped working : look for an solution online orclose he program, there are no blue screens no freezes nothing, the game never has a chance to start!

I was a lil suspicious of my norton suite so turned of the antivirus but no joy, like i said the other two games still work no problem, i'm looking online but there are specific solutions to blue screens, freezes and bugs, i never get started so i feel my problem may be simpler? any ideas on where to start? Here are the error codes to give you guys an idea.

Problem signature:
Problem Event Name: BEX
Application Name: Borderlands.exe
Application Version: 1.0.0.0
Application Timestamp: 4ab92d4f
Fault Module Name: StackHash_0a9e
Fault Module Version: 0.0.0.0
Fault Module Timestamp: 00000000
Exception Offset: 00000000
Exception Code: c0000005
Exception Data: 00000008
OS Version: 6.1.7600.2.0.0.256.1
Locale ID: 1033
Additional Information 1: 0a9e
Additional Information 2: 0a9e372d3b4ad19135b953a78882e789
Additional Information 3: 0a9e
Additional Information 4: 0a9e372d3b4ad19135b953a78882e789

Problem signature:
Problem Event Name: APPCRASH
Application Name: shift.exe
Application Version: 1.0.0.0
Application Timestamp: 4a953d01
Fault Module Name: shift.exe
Fault Module Version: 1.0.0.0
Fault Module Timestamp: 4a953d01
Exception Code: 80000003
Exception Offset: 009837c7
OS Version: 6.1.7600.2.0.0.256.1
Locale ID: 1033
Additional Information 1: 0a9e
Additional Information 2: 0a9e372d3b4ad19135b953a78882e789
Additional Information 3: 0a9e
Additional Information 4: 0a9e372d3b4ad19135b953a78882e789

Problem signature:
Problem Event Name: APPCRASH
Application Name: BFBC2Game.exe
Application Version: 1.0.1.0
Application Timestamp: 4b70966a
Fault Module Name: BFBC2Game.exe
Fault Module Version: 1.0.1.0
Fault Module Timestamp: 4b70966a
Exception Code: 80000003
Exception Offset: 01913907
OS Version: 6.1.7600.2.0.0.256.1
Locale ID: 1033
Additional Information 1: 0a9e
Additional Information 2: 0a9e372d3b4ad19135b953a78882e789
Additional Information 3: 0a9e
Additional Information 4: 0a9e372d3b4ad19135b953a78882e789

I have since updated my nvidia drivers, my bios, audio drivers, and tried running the game as an administrator, i've even tried running them in different compatibility modes every time, borderlands worked once as soon as i installed it, played it for a full three hours no issues, then gone to the doomed error, the other have never loaded up
any help would be appreciated guys. Thanks

Moe

Games all patched?

Hey Guys, thanks for the ideas, I've uninstalled norton and turned DEP off for the exe files and still no joy, any ideas?

Stab in the dark, did you try right click > run as administrator?

Moe, if u figure it out, let me know. I have exactly the same problem w/ Left 4 Dead 2. Did all the same stuff as you. Nothing changing behavior so far. Wierd.