...use System Restore to revert back to a date before the Windows Updates were installed.

Unfortunately, since you've given us no information about the computer, it's not really clear what happened here. Make and model? Operating system used now and before? Were you using something other than Windows 8 previously, or is it Windows 8.1, and if so, which operating system? Did the computer ever run correctly using Windows 8? Did the problem start when you attempted to install Windows Updates on the computer or when you upgraded to Win8?

Hope this helps and please let us know more.

Grif

Hope this helps.

Grif