Windows10 screen lock

Ed_Gee wrote:
On a hard lockup like that I find the only immediate solution is to hold the power button until the computer turns off. Wait a few seconds, turn it back on, cross your fingers and hope the process either starts over, proceeds from where it left off, or at least still works under the previous Windows version. If the problem persists after a couple of these tries then it might be necessary to have someone knowledgeable deal with it hands on.