Follow the steps given here to uninstall the display driver form the device manager.
a) Press Windows key + X key when you are at desktop.
b) Select Device Manager.
c) Find and double-click Display driver from the left panel to uninstall
d) Right-click the device, and click Uninstall.
e) Windows will prompt you to confirm the device’s removal. Click OK to remove the driver.
f) After the uninstallation is complete, reboot your computer as soon as possible.
Reinstall the drivers, restart your computer and check for the issue. If you the issue persists then go to the manufacturer’s website download the latest driver for Windows 8 and install it. You can download it from the link given here.