Hi, my daughter's Surface Pro 4 has the "Windows Product Key" screen. I went through the self guided steps that included a batch file to run, clean-hkcushel, after that I scanned with Malwarebytes and fixed all problems found. Rebooted the computer and desktop loaded fine for the first few seconds, then there was a pop up from the UAC to allow a file called prsetup.exe to run, I chose No and then the "Windows Product Key" came back. At this point I was able to access the Task Manager to End Task of a file called fatalerror, this got rid of the "Windows Product Key" screen and gave me back my desktop. After a few tries at rebooting nothing changed, ran the Malwarebytes scan a few times with 0 problems found. Downloaded HitmanPro, scanned and found no major problems.
At this point I found out that the prsetup file that keeps trying to run was located in a temp file, deleted it and now I don't get the popup anymore but the "Windows Product Key"screen comes up anyway, this time I can not see the Task Manager anymore. Booted to Safe Mode and copied RKill and ran it before scanning with Mawarebytes and then HitmanPro and then AdwCleaner, all show 0 problems.
I then decided to try and run a Kapersky Rescue from a bootable USB. No matter what try I can not boot from USB. Disabled Boot Secure, Boot Cofiguration changed, tried more than one USB drive.
Please help, Only access I have is Safe Mode but my wireless adapter disappears.