I've posted this issue in a former message. I'vetried out all of what you've mentioned but still have the same problem (see screnshot) "trasparent squares in views".
This happens only in AH2. In AH1 and all other applications is use there's no such effect.
What i tried:
reinstalled VIA drivers v. 4.51
reinstalled Catalyst drivers 4.5
ASUS MB Bios v. 1006
Montitor drivers for Acer AL2021 (LCD) actualized
Temperature of Case (Motherboard, CPU etc.) all below 30 Celsius
What could i try else ... ?
airmess