Greetings everyone. Metro UI is practically broken and Start screen is completely blank although I can still access the desktop. Based on what I've read in this blog post, it looks like the User Account files got corrupted which is probably why sfc /scannow doesn't work as well as safe mode. Guest Account works fine. Chkdsk found no problems. There are no activation problems. System restore points seem to be missing. The post suggests that I should add a new admin and then unlink the old admin account. The problem is, user management requires the Windows 8 settings app which also doesn't work. Is there another way to add a new user in Windows 8? Perhaps some secret Run command? Anybody else fixed this problem another way? Thanks!