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Windows 7 to Windows 10 - error 0xCFFFFFFF 0x40019
Trying to update my Desktop PC from Windows 7 to 10. I have already had a fault free upgrade of my laptop, but my desktop fails.
Initial Installation seems to go fine, until I am asked to re-login. When I enter my password to login to the PC for the first time with Windows 10, the screen freezes. If I try to do anything, I get a reboot - and the problem repeats.
Eventually, I rolled-back (successfully) to Windows 7 and received the above error.
Google has been of little help, and neither has the Microsoft help (although they suggest the error 0xCFFFFFFF is an app-hang). I don't even know where to start looking!! Any ideas???????