Hi there, it's been more than a year since I bought a laptop with this graphic card. My brother made up a mess with the video driver so I tried to fix it by installing the newest version of it.
I downloaded the driver detector from the AMD's official support page and it installed a driver from a different video card called Radeon HD 6480G. After I installed it, I immediately realized it was a wrong driver due the glitched graphics and the poor performance. I uninstalled it and downloaded the driver manually from the same page and it kept installing the same driver. Restoring my laptop didn't resolve anything.
Guys, I really need your help.
P.S I guess the video driver is slowing down somehow the startup of my OS.
I use Windows 7 Home Premium x64, the vendor's of the laptop is ASUS.