Updated Installation Instructions: Make sure you do this entire process with an Administrator enabled account.
Van Dach has revised his instructions and changed a few things around. I am posting this guide to help make people's installations of these drivers as painless as possible.
If you are running MSI Afterburner and more than one Graphics Card in Crossfire X, your 2nd card may be disabled after installing the 11.1a driver. It happened to me, and after researching I found others who it happened to. If this happens to you repeat the uninstall process of your drivers, uninstall MSI Afterburner and follow the guide below to install the drivers and modify them. After that you can install MSI Afterburner again and everything will work fine.
1. Uninstall AMD Catalyst Suite from Control Panel. Don't Express Uninstall if you have an AMD chipset motherboard.
(If you're running a fully AMD motherboard using a chipset such as 790GX, 780G, 890FX, 760G etc. DO NOT use Express Uninstall of all AMD Catalyst Software as it may be ninja uninstalling your chipset drivers. Instead choose Uninstall Manager --> Custom --> And choose all of the modules on the list *your chipset drivers won't be one of these selections*.)
After the driver uninstall is complete, REBOOT IN SAFE MODE http://www.computerh...sues/chsafe.htm
2. While in Safe Mode, Open Device Manager (Control Panel> System and Security> System> Device Manager). Uninstall all devices in "Display adapters" class.Tick "Delete the Driver Software for this Device" also if available. DON'T right-click "Scan for hardware changes" afterward (we will do it later, we want the Display adapters class to be empty for now). Minimize Device Manager window.
3. Run latest "AMD Catalyst TwL Cleaner 3.9.2.cmd". Say yes to all deletion asked. Delete the pinpointed registry GUIDs (important). Don't reboot yet.
4. Go back to Device Manager windows. Right-click "Scan for hardware changes".
Reboot into Normal Windows Mode
NOTE: If at any moment Windows stays stuck at "Starting Windows" boot screen while loading, don't panic, restart in Safe Mode, open Device Manager, uninstall all display adapters even if it's already "Standard VGA", tick "Delete the Driver Software for this Device" also if available. Then right-click "Scan for hardware changes". Reboot in Normal Mode, restart the procedure, that should fix it. -confirmed this works as this problem happened to me
If you still have issues, try the "deep clean" Safe Mode method in Complementary General Tweaks link below.
5. Install your new AMD Catalyst driver. Don't reboot yet, even when asked to.
6. Run "AMD Catalyst Application Profiles (CAP) Von Switcher.cmd". Install either the latest CAP or the 0kb dummy. Don't reboot yet.
(The 0kb Dummy is recommended for FFXIV, however in some games you will achieve better performance by using the normal CAP *ie. COD Black Ops*) *Users who aren't running Crossfire X and are just using a single Graphics Card can just install the latest CAP or skip this step entirely as these are Application Profiles for people running more than one Graphics Card*
7. Run "AMD Catalyst Von Tweaks.cmd". You can now Reboot.
Your driver is now installed and modified.
If a game doesn't run well, use the Catalyst Application Profiles (CAP) Switcher to switch your profiles and reboot.
At this point I usually go into device manager and disable the HDMI High Definition Audio controllers on both of my cards as they interfere with my soundcard and constantly try to take over as the default device. If you use the Realtek HDMI Audio on your graphics card(s) do not disable the audio controller(s).
If you are using Crossfire X in FFXIV you will experience
This post has been edited by Miken420: 02 February 2011 - 11:59 AM