Ok its so odd yesterday all my games where working fine with the odd full freeze
in the past. (Maybe like 9 times in total)
These games totaly crash and by that i mean no error message, just totally freeze and requires a manual restart
COD4 Pre release DEMO- Crashes 5 seconds into the actuall game
(Worked fined yesterday, great game)
Command and conquer 3- Had freeze issues in the past, i dare not try it now i cant be Fu**ed with another manual restart.
World in conflict - Freezes in the menu sometimes or i may get 1 second ingame
(Worked yesterday and ONCE today)
Need for speed underground 1 - Crashes on menu
(NEVER CRASHED IN THE PAST)
These games work fine with no crashing what so ever.
Call of duty 1- Works absoloutly fine 
ioUrban terror- Works fine 
Counterstrike source- Works fine suprisingly 
MY NVIDIA DRIVERS ARE FULLY UPDATED SO IS DIRECT X AND ALL MY GAMES