I have a very strange and annoying problem. My 128GB SSD drive which was the boot drive with Windows 7 pro installed was full so I got a 1TB SSD and cloned the old drive to the new one using minitool partition wizard free. I then booted from the new drive but didn't disconnect the old one. I logged in as normal but then couldn't access anything that requires Admin rights although my account still shows it's an Administrator account. I then disconnected the new drive and booted from the old one but had exactly the same problem! It seems I've been demoted to a standard user on both drives even though they both say I'm an admin. I've tried many things to try and fix this but as I can't access regedit, user account settings, Adminstrator cmd, services etc I'm basically like a standard user so don't have access to anything that's useful to fix the problem.

Whenever I try to "run as Administrator" I just get a messagebox saying "The specified path does not exist", even though the file is definitely there, because I've found the file in file explorer and right-clicked it and selected run as administrator.

I had a windows 10 installation disk (even though I'm using Windows 7) and ran it so at least I could get access to a command prompt. I tried running diskpart and changing the drive ID with UNIQUEID DISK ID= but that prevented the disk being recognised by the system altogether so I changed it back again. I also tried to enable the built in Administrator account using net user administrator /active:yes but even after I do this the Administrator doesn't show on the windows login screen so I think I may be setting it on the disk of the Windows 10 installation rather than my Windows 7 installation because no changes seem to persist.

I think it must be some security lockdown when it detected 2 identical drives on the same system or something like that. I've spend a good day trying to fix it and I'm now stumped, hopefully someone can help!

UPDATE:

I've managed to enable the built in administrator account by booting the windows setup disk and then opening a command prompt. From there I renamed magnify.exe to magnify1.exe and then copied cmd.exe and named it magnify.exe. I then rebooted and at the windows 7 login screen I selected the magnifier on the Ease of access menu which launched an Admin cmd prompt. From there I could enable the built in Administrator account and then use that to log in which solved some of my problems but when logging in using my original account the issue still persists. I can now however "run as Administrator" from the built in administrator account without an error but I cannot access some things in control panel such as 'Add or remove user accounts", it just does nothing when I click it. I can access local group policy editor however and it seems like I should be able to solve some issues with this although I'm not sure where to go from there