I managed to install amd r9 m265x series via device manager using the "inf" method IN SAFE MODE.. I reboot system and install crimson 15.12 every thing was fine... but unfortunately when I plugged in AC power laptop freezes.. I forced shutdown to reboot and that was the end (sometimes freezes before password login or THREAD_STUCK_IN_DEVICE_DRIVER .. I had go go back to safe mode to uninstall driver via ddu.. and windows is back to normal... I think this should be a hardware issue not software.. maybe I should consider replacing my motherboard because the graphic card in integrated. but if you have any suggestion pls share me... because replacing motherboard is risky and expensive.