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can't change date & time due to mouse not being able to select drop down panel options; screen only goes up, opening screen won't allow me to login in unless I swipe the first screen by hand. Tried erecovery, window8.1 asking for installation key which I don't have since it was a free upgrade. can't select installed printer to print, screen defaults to fax. Oringinal OS was 7 ultimate, upgraded to 8, then 8.1, then the problems started. Operating system:Windows 8.1 (64 bit) System root: C:WINDOWS Available physical memory: 16265 MB CPU: Intel® Core i5-4200U CPU @ 1.60GHz Drive Info: C: 917.72 GB G: 0.10 GB I: 451.66 GB Internet Explorer: 11.0