I bought a used HP dv7-1451nr with native Vista Home Premium 64, AMD Turion X2 Ultra processor, 4GB RAM and an ATI Radeon HD 3200 gpu.
Hard drive broke almost immediately, so I replaced it. No OS.
Guy who sold me the hard drive had a copy of Windows 8 Release Preview; I figured, what the hell. Loaded it.
Works surprisingly well, was on the internet right out of the gate.
Windows 8 loaded old "AMD Driver 188.8.131.52" for the Display Adapter, so I wanted to upgrade. Downloaded the 12-6-legacy_vista_win7_64_dd_ccc_whql driver and installed it.
All green checkmarks and smiley faces, log even said it succeeded.
PROBLEM: System ignores the new driver completely, like it never happened. No showing the updated driver in Device Manager, no 3D options in CCC (barely any options at all), nada.