Very nice tool , and I am a donator to your efforts.
fairly new windows 8.1 install on a Dell XPS8700 , sfc /scannow indicated that it found problems that it could not repair. So I ran you latest windows repair portable and it completed. scf / scannow now reports its happy however when I go to hardware & sound , devices & printers and try to run the " add a device ", the window that normally scans for new hardware only opens for about a second and closes. I'm now concerned that I will not be able to add any additional hardware on my machine.
Any thoughts or suggestions, don't want to rebuild this thing again for awhile.
Willie