Toshiba designs their drivers to work in their laptops. They are custom designed by Toshiba for Toshiba. So does Sony and Panasonic. You cannot use 'generic' drivers from AMD. Use the drivers offered by your laptop manufacturer or the Leshcat drivers (google it). Is that clear enough?
Intel I7 960 @ 3.87ghz *Intel DX58SO *AMD R9 290 4gb *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
***** cetera fallunt, ludere mortuus ******