I have a HP Pavillion p7-1254 desktop computer that came with windows 7. After having Windows 8.1 installed,
the monitor flashes verticle rows of horizontal multi-color bars. The graphics are AMD Radeon HD6530d integrated. The tech company that installed win 8.1 tried to delete the AMD driver and that took out the flashing lines but left the view fuzzy and distorted. They hit the wall on thius and can't find a driver to make it HD again.