I would suggest you to follow these steps:, Hope that these suggestions can help you.
To uninstall a program from Windows 8:
1. When in the "Start" screen, start typing "Control Panel".
2. Click on the "Control Panel" from the Apps search results. In the opened window select "Programs and Features".
3. In the Programs and Features window select the program you want to uninstall and click on the "Uninstall" button.
1.First of all click the Start button to view the Start Menu.Then choose the Control Panel option.
2.After click Control Panel, enter into System and Security, then click into Device Manger.
3. Then as you can see below, right click on your card's name and finally click Update Driver Software as shown in the screenshot below.Then click Update Driver Spftware.