I have a weird problem. One of my clients PC's got a bad harddisk. I could repair it with chkdsk. After a restart, the Start menu wouldn't work. In fact, not a single app worked, only desktop apps. So I added two users using Powershell in order to be able to repair the damaged profile. After logging out or a restart, the login screen is empty. WTF! Can't get a restore point to work: "Choose a Windows install first. Then choose Repair". Any suggestions appreciated.