Hey, been playing witcher 2 recently, and I'm having an odd technical issue that I couldn't find anyone else posting about. The game runs fine on high settings when I'm in action mode, but for some reason, my computer always ends up hanging whenever I'm in inventory/journal mode, and there's this buzzing sound through the speakers, and I'd have to end up resetting my computer. GPU temperatures seem fine which would seemingly indicate it isn't an overheating issue, and I've ran crysis, bfbc2, etc, without any of these issues, so it doesn't seem to be a hardware issue. Any idea whether it's a driver related issue or some other software related problem? I've also recently updated my ATI drivers. Been pretty frustrated lately, any help would be much appreciated.

Computer Specs:

i7 920 CPU, 2.67 Ghz
6.00 GB RAM, 4890HD Radeon
Windows 7, 64-bit