I have a Lenovo laptop B50-30 that came with Windows 8.1. I have made the changes to the Bios and installed Windows 7 Ult x64, and everything works fine, except: When I boot the computer, during the time that Windows is loading, I get a shadow image...see picture attached. Once Windows has loaded, everything is ok. It also happens when I use an Acronis boot image to make an image backup (ie the Acronis program operates before Windows loads). So I think, maybe, I should reflash the Bios. Would you agree? I have been to the Lenovo Driver download site, but no Bios is available. I would appreciate any suggestion. Current Bios: InsydeH20 Rev5.0 Bios Version: 9CCN22WW (V2.00) Thanks