Stuck at sign-in screen

Hi,

I've had a problem where Windows was booting up fine sometimes, but other times it couldn't find the desktop settings, and I couldn't open any files (even though I could browse the hard drive) and there was no Start menu.

I've been trying various things to fix this, one of which was to set up a new user account. I followed instructions to open Powershell and I typed "net user TestUser password /add". It said it was successful.

Now I cannot even get into Windows. At the sign-in screen there are no users available at all (I just have the nice picture of blue window). I have tried shift-Restart to get to the troubleshooting options, but this doesn't work, it just restarts the PC and I get back to the same sign-in screen.

I don't have a boot disk.

Can anyone advise of any way I can fix this? At least get back into Windows so I can carry on working on my other problems...!

Thanks,
Andrew

It looks like you have tried quite a number of ways to get your PC started. I'm surprised the shift - Restart did not get you to the Advanced Start-up screen and allow you to troubleshoot. That suggests there are several corrupted files.

If you look at the following tutorial check out option 6 and see if a hard reboot 2-3 times gets you to Advanced Repair Options.