Why did you reformat? Have you bothered to go to Windows Update and manually checked for available downloads? Have you read the 'sticky' "Updating Mobility Drivers" ? Did Microsoft install drivers for your graphics through a update? Bottom line...use the drivers supplied by the manufacturer of your laptop...made for your laptop model.
Intel I7 960 @ 3.87ghz *Intel DX58SO *HIS HD6970 2gb *Corsair TX650M *2x4gb Corsair XMS3 *WD Black 1TB *Windows 7 Home Premium 64bit ***Asus N71Jq laptop *Intel I7 720QM Processor *Mobility Radeon HD5730 1gb *8gb Ram *Windows 7 64bit ** Toshiba P75-A7200 * Intel I7-4700MQ * Windows 8.1 64bit
* A clear conscience is usually a sign of bad memory *