Uninstalling graphics drivers completely on an ALL AMD notebook? Help appreciated

Heya, I need some help doing something as simple as uninstalling graphics drivers - which turns out to be one of the most complicated things in the world. I've been installing new drivers straight over old ones for a while now, but just today when I updated to mobility Catalyst 12.10, I noticed that my application performance settings menu wouldn't open anymore in the catalyst. In fact, after I tried to open it, Catalyst stopped working completely and it would crash whenever I tried to open any catalyst menus. So I went and figured I could solve it by just uninstalling all the drivers via the windows control panel and doing a fresh install of the new ones.

Well I was dead wrong, I went to do an express uninstall of all AMD software (at the time I figured that sure, it would only affect graphics card related things!) - and it actually attempted to uninstall my CPU (?) drivers and everything - and Windows 7 bluescreened mid-uninstall and left me with broken graphics and system drivers. Luckily I managed to do a completely functional system restore back to my previous drivers (really lucky, since I was already looking for my recovery discs ).

So how the heck does one uninstall graphics cards properly on an all AMD system (AMD A8 3500M 1.5 Ghz + 6740G2 graphics - 6620G + 6650M). I see there's a custom uninstall option in the AMD catalyst uninstall utility, but just which are the graphics card related items in the list so I won't accidentally delete a usb driver or something? There's no real documentation on this anywhere I searched. Driver sweepers are apparently out of the question if even the official uninstaller confuses other AMD chips with the graphics card. I'm not even sure if my current drivers are entirely functional since they had to be restored by Windows (CCC does work, but haven't tested any games yet).

 

I've always just uninstalled the device in Device Manager. Windows will install a basic driver when you restart the computer, but I've never had any trouble installing new drivers over those ones. You might also need to uninstall Catalyst Control Center when you uninstall the device if you want to refresh the whole thing. There may well be more to it than that, but I've always been fine with those simple steps.

 

I tried that and I still get the same issue. It looks like Catalyst kept the same application profiles I had already made on a previous version, and now they've become corrupt and whenever I try to access them, it causes the catalyst control center to freeze and never load again.

After some searching I found this article which details that it's apparently due to corrupt registry entries:
Solution for AMD Catalyst Control Center unable to start problem after driver upgrade | The 8th Voyager

However since I have AMD+AMD is it really safe to go poking around the registry deleting those entries when I have no idea what they refer to?

This whole issue seems really stupid, the drivers themselves and the catalyst work PERFECT apart from the fact that if I do that application settings thing, it all goes to hell and I have to go back to previous drivers to get it working again.