Did you figure this out? None of the above solutions are helping here, on xp sp3. Oddly, no driver issues last week. Phone must have updated and broken the drivers. Figures, every android update is a downgrade. Lollipop, broke application firewall, timerific, cell toggle, captive portal scripts, most of my sd utility, auto lux adjustment, now mtp. And 12 other essential items, that you don't think about until broken.
And, I lothe trying to google a solution, only to get posters telling others to google. 99.99 percent of people reading the page are here via google-never having visited the forum before.