
Tbird will only open in tiny square upper left corner of screen, can't expand
Have used Tbird for years as pop3 on my desktop (Win10) Upgrade Tb often. For weeks now, I have not been able to use Tbird on desktop. Only open with tiny square in upper left hand of screen (see pic). Tried everything but the only way I can use TBird is going to Earthlink Webmail. PLEASE someone, Help me. I need my files. Tried Microsoft uninstall and reinstalled TBird. Same problem. Would like to migrate TB permanently to my laptop but afraid that since the reinstall had the same tiny screen problem, it might also migrate to my laptop. TIA.