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Launching Firefox browser causes Lenovo laptop screen resolution to shift from optimal 1366X768 to undesirable 640X480.
Any idea why?! And how to resolve?! It reverts to the undesirable resolution on every launch now, despite my 'fix' in Control Panel. The only relevant details I can add involve... 1) a Freeze which came from an undesirable tab that popped up in one of my three open windows, probably phishing or some such. 2) This was resolved by a PC Restore, followed by installation of some Mozilla-recommended security apps. Thank you!
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hi ZorbaBuddha, please right-click the firefox icon on your desktop & go to properties > compatibility - in this panel uncheck any compatibility options that might be set...