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I have a v919 duel boot and my screen started this as well some time between March 27 - April 2nd. I think it was either a windows update from what I'v been reading. I read the touchsetting.gt file needs replaced but that didn't work and the odd thing Ican't determine the video chip set even after using Intels system check program. Got Intels web site and run that program it might help plus it gives you all the specs on your tablet. I think the easiest thing to do is reload the image and deal with the chinaeese language. The Onda web site really sucks if you thnik about it they should have a language option on the site. If you find anything out let me know.