So now you in your old administrator account or the new one? If you back your old administrator account, and it don't work, with all those AV setting you said worked before done to it.

Please try the following:

• Open the Start Screen, and type 'cmd'. Right-click on the search result and select 'Run as administrator' from below.
• Type: sfc /scannow
• Wait for the scan to complete (this can take several minutes)
• Some help on how this looks should you need it: https://support.microsoft.com/en-us/help/929833/use-the-system-file-checker-tool-to-repair-missing-or-corrupted-system
• If the SFC finds errors, but cannot fix them, please also run the following command in the same command prompt window:
• dism.exe /online /Cleanup-Image /RestoreHealth
• Some help on how this looks should you need it: https://www.windowscentral.com/how-use-dism-command-line-utility-repair-windows-10-image

The above command should assist with replacing any damaged or problematic system files. Please note, however, since it may require restoring certain files, this process can take some time and you will need to be patient until it has completed.

Please let me know whether this resolves your problem or if you have any additional questions.

Thank you,

Basj,
Stardock Community Assistant

If its no corrupt files and it was okay when you create a new admin account. The only next step I can suggest is a total fresh install of Windows 10.

Thank you,

Basj,
Stardock Community Assistant