Hello, I've got a Lenovo G500 with AMD HD 8750m.
I installed Windows 8.1 64 bit, and downloaded from lenovo website all drivers for my laptop.
Threre was an AMD driver for HD8750 (version 188.8.131.5200). I installed it and everything works good. Then i downloaded a new driver (lhttp://support.amd.com/en-us/download/mobile?os=Windows%208.1%20-%2064 ) Crimson 15.12 (version 15.300.1025.1001) from AMD website. Installed it and reboot my laptop. When i start laptop, windows launching and i've got a Windows 8.1 screen where i should input my password, but this screen stays for 2-3 seconds and then screen turns to black. I still can input my password and log into the system but screen still stays black. Windows is working but screen allways stays black. If I launch safe mode and delete AMD driver (version 15.300.1025.1001) or I just install version 184.108.40.20600 and reboot laptop, Windows starting to work correctly.
The followings are spec for the laptop:
MODEL : Lenovo G500
Intel Core i3-2348Mm
AMD Radeon HD 8750M with 2GB Dedicated VRAM
Windows 8.1 64bit
The same issue like i have was in this thread Windows shut down but computer stay after update the graphics driver, but noone answered there(