If your laptop manufacturer supports the upgrade to 8.1 for your model then they have the drivers for it. You may find that 'upgrading' to 8.1 from 8.0 or Win7 is not always the best choice. If you continue to have issues, then clean reinstall 8.1.
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 *