I have just upgraded my PC from Windows 7 to Windows 10. I never did setup or used a password to login to Windows 7. Using the new Microsoft Account email and password created on upgrade, the Windows 10 Login Screen now tells me I have an incorrect password yet I am able to access the Microsoft Account with the same username and password on my Windows 7 laptop - no problem. The Windows 10 does not allow me access to anything unless I enter the correct password. It also tells me I can fix the problem through the account.live.com website which is where the new username and password DO WORK!?! How can I get past this issue and/or rollback to Windows 7 if the upgrade doesn't allow me past this login screen?