UAC prompt not appearing

[Helpmeh96]

Whenever i open a program or try to install one that requires special permissions, the uac box makes its noise but no window appears. Its running in the background in task manager but i cannot bring it up.

I have tried sfc /scannow, which doesnt work unless im in safe mode and comes back with no errors. Ive tried system restores, even a system wipe using the built in software, nothing is working.

Happened after the latest windows update, ive had their agents remote in and they cant seem to get anything to work either.

 

[Colif]

Wonder if its appearing on a non connected monitor, click win key + P and set it to PC screen only

If you willing to do a system wipe to fix, just do a clean install and avoid any corrupted software that could be on the image (reset uses a system image to reinstall win 10, if its broken, so will the next install)

Also, on another PC, download the Windows 10 media creation tool and use it to make a win 10 installer on USB

change boot order in BIOS so USB is first, hdd second
boot from installer
follow this guide: http://www.tenforums.com/tutorials/1950-windows-10-clean-install.html

when you reach screen asking for licence, click "I don't have a key" and win 10 will continue to install and reactivate once finished

On the screen where you choose where to install win 10, if it gives you an error about GPT drives, delete all the partitions on the hdd and press next. If it still gives error, cancel out of the installer and restart PC and start installer again, it will accept next on that screen this time (some PC just need a restart here)