Thanks simrick for keeping an eye on me!

Okay - I'm so stupid! Tried the mouse on a different computer and it is the mouse that is messing up!

I don't know, never suspected...Maybe it got dropped.

Tried the other computer's logitech...

Doing a full scan with Norton. While it is running, has already found 8 security risks and resolved them.

This problem did not correct with the update / repair process. Seems like a corrupted...

Went through the whole update / repair process and the mouse will still not left click on anything properly. The cursor moves around and the icons light up, but if you double left click on anything...

Restarted, now the screen says" updating windows-your PC will restart several times" and there is a circle with % of progress showing.

Okay, problem. Got to the ready to install window. Selected Install box and hit enter with Install windows 10 home and Keep personal files and apps selected. Went through a couple of screens like...

Having to use Alt-A to select "Accept" and Alt-A for "Next", etc. Mouse clicks, right and left won't do it, not even the combination of left click to highlight and enter key to select. I'm...

Okay, following the guide "Repair Install Win 10". Mouse and buttons are not cooperating. Was able to navigate with the mouse, then found some windows responsive to combination of right clicks and...

Thanks simrick! And extra thanks for the links - otherwise the repair would have been above my pay grade! I won't be able to work on it till later, but I will post what happens.

I've been an early adopter of Win 10 with almost no issues on 5 computers. Last week, started to have some mouse issues - restarted a few times and issues went away. Today, they're back and won't...