Windows Vista GDI hotfix
After a Windows Vista-based computer has been running for an extended period of time, the desktop screen may stop updating correctly. For example, you may experience any of the following symptoms:
- Parts of the screen may go black.
- Parts of the screen may become transparent.
- The toolbar may disappear.
- The toolbar may appear at the top of the screen instead of at the bottom of the screen.
KB932406 - The Windows desktop may stop updating correctly after a Windows Vista-based computer has been running for an extended period of time
Now my problems with transparent or black parts of screen are gone. :)