Problem: The Witcher 2 crash – crashes at menu / keeps crashing while playing / crashes afterstartup / keeps crashing while loading
(note: the following possible solutions are for specific games, but to some extent have worked for other titles – such as Shift 2, Portal 2 and Crysis 2 – that have encountered the same technical problems)
Possible Solution #1:
Alt+tab out of the game and check if there are any windows firewall or any other security notification, then click allow or a similar option to it
Possible Solution #2:
Disable your anti-virus programs
Possible Solution #3:
Disable all unnecessary background applications
Possible Solution #4:
Update your BIOS
Possible Solution #5:
Download the latest version of your DirectX
Possible Solution #6:
Download an earlier version of your video card’s current driver
Possible Solution #7:
For Nvidia video card users, try downloading and installing the Nvidia 270.61 driver
For AMD (ATI) video card users, try download and installing the AMD Catalyst 11.5
Possible Solution #8:
For ATI/AMD users – What did end up working (for me) was downloading a driver cleaner and following the instructions here (I tried to download the program here as well, but was unable to) in order to get a completely fresh install of the ATI drivers. Then did a fresh install of 11.5. This also fixed the ATI catalyst Catalyst Control Center being unable to launch.
Possible Solution #9:
For AMD users, download and install the AMD Dual-Core Optimizer version 1.1.4
Possible Solution #10:
Download an earlier version of your video card’s current driver