Hello. I have an ATI 5750 512mb and prior to updating from 11.3 to 11.4, Need for Speed Hot Pursuit ran perfectly. Since upgrading I can't get anything more than a black screen. Normally I'd just roll back to 11.3 but for some reason I'm having loads of trouble doing that as the ATI installer keeps crashing every time I try.
I've also noticed a few other problems since upgrading but I'm not sure if that is related. For example when I click on iTunes it takes between 20 and 30 minutes to start up.
Here's my full build.
AMD Phenom II X2 550 BE (2 extra cores unlocked) ATI Radeon HD 5750 512mb 2GB DDR3 ram @ 1333mhz 250gb hard drive (at first I thought it would be a problem with the extracting but I have 113gb free so it's not a space problem) Windows 7 Ultimate
More abouthaving trouble
If you can't remove the drivers, try uninstalling the drivers from the device manager. Once uninstalled, you should be able to reinstall the 11.3 drivers.
Driver Sweeper is a great free utility to clear out old drivers as well.