Hello. I upgraded using the automatic process from within Windows 7 home premium. I'm using an All-in-one machine with 4gb RAM and 3.10ghz Core i3.

Initially I had a local account with no password, which automatically logged me in from start up. Everything ran smooth and well. I switched to a microsoft account which requires a password, in order to install apps from the Metro store.

I shutdown overnight, and return the next morning, and I'm faced with the usual screen. A large image, few icons. I swipe upwards on screen or press space to move along and log in. My username is presented to me, but the password input field is missing. It says "Andrew" and has my email beneath it, but the password box is just not there. I clicked the screen randomly but nothing showed up. I've tried typing anyway but still nothing.

This left me comlpletely unable to sign in and use windows. In dire need of a PC to use, I activated a workaround which allowed me to use cmd without logging in and used the /active command on the hidden administrator. This is the only accessible use of my PC I've got, and my files are buried deep within C:/users/..... and so on.

As per the title, I also had this issue in build 10049 but I had to revert back since I locked the PC using window+L out of habit, and I couldn't log back in. I reverted back to 10041 since having restarted the PC from being locked out, I encountered boot loop.