It could be a compatibility issue with the drivers since they are not made for Windows 8. Try uninstalling them, then reinstall using compatibility mode.
Troubleshoot Compatibility
This can help with some (but not all) programs/drivers:
1) Uninstall the program if it's already installed. Then when you install/reinstall it instead of double clicking on the install file right click it and select "Troubleshoot Compatibility"
2) Then click "Try Recommended Settings" and in the next windows click "Start the Program" to install it.
3) After it installs see if it works correctly. Please note - some programs may not be able to run in Windows 8.
Since Windows 8 has not been released yet not all drivers are going to work perfectly with it. Some drivers are very specific about the operating system version, so you might have to wait until they
release Windows 8 drivers (if they make them for your model).