Windows 10 Problem

[StanleyS1]

I upgraded Windows 7 to Windows 10. All appeared well. I was able to log in to Windows 10 and start using it. After logging out and in a couple times, Windows 10 won't fully boot up. I get a large black screen in Parallels where Windows 10 should be. I went to my wife's Mac account and booted Windows 10. It came up successfully. After logging in and out, I get the same black screen as Windows 10 boots up but doesn't finish. The last thing I did in my and my wife's Windows 10 accounts was to set up the Mail app to access our msn.com email accounts. This forced the login password to our Windows 10 account to be the same as our msn.com email passwords. I don't know if this had anything to do with it, but I'm stuck. Anyone else encountered this and worked around it?

I didn't get the symptoms quite right. I can log in once. Then when I log out I can't log in again. After a length of time (unknown), I can log in once then I am locked out from logging in again for some length of time.

I managed to fix this. When I was able to log in, I found how to update Windows 10 and did so. Thereafter, I can log in at will.

 

[KennethH]

Have tried the sequence suggested here http://kb.parallels.com/en/122745 several times only to meet the problem at install of 'unknown command line option.' Obviously Parallels wasn't and isn't ready to Windows 10.