Thanks for the reply. I have tried about twenty different resolution/Hz combinations. This is a known issue with the Olevia TV that some people say was fixed in a firmware update before the company went bankrupt and shut down its support sites. Unfortunately, I didn't get the firmware update. I had connected the TV to my Vista machine in the blind by memorizing where to move the mouse on a blank screen to select HDTV/720P standard mode (the only one that works without the upgrade), but on windows 8 it is too many steps to perform blind. If I can find someone who saved the firmware update (later than 17C) it should fix the problem.
Thanks again for you time.