I have FSX: Acceleration and my computer has 1GB RAM, 2.80 Gz. Recently I ran PC tools antispyware, antivirus and registry mechanic in hopes of speeding up my system. The initial results were great, but since a few issues have cropped up which are frustrating me:

The resolution of the computer cannot be changed from 11xx, 8xx. I used to have my res up to the max all the time.

When playing FSX, I get a black screen with some aircraft, as a matter of fact I get a black screen on the instant flight screen. Happened with the Alphasim F-22 and a freeware grizzly that I have, did not happen with the Acceleration F-18 or the trike.

What could be happening that I get the black screen? Sometimes it lets me see (mostly in 2d panel view) but otherwise the screen is completly black.

I have an ATI graphics card, when I noticed the desktop resolution wouldn't change, I downloaded ATI Catalyst, but this was BEFORE the black screen problems. I started changing the settings to see what worked and after awhile I noticed I couldn't fly with the F-22. I took those drivers off (uninstalled) and reverted to the old ones but it's still happenning... anyone know where I can get good ATI drivers?

I have the same problem but only @ the aircraft select screen when i exit a flight to fast in jets.  but it dont happen when i actually fly