tablet usb power

Two days ago I used my laptop to power a device via a usb connection. After I removed the usb cable the keyboard starting malfunctioning. When pressing the keys some would not type at all, some would type the wrong character, and some after pressing the key just once would type multiple wrong...

hi and thanks im new to this site but for four weeks have had no luck anywhere. i won a dell latitude 10-st2e tablet with windows 8 at an auction. since it had no charger they could not test it i bought it as is. i bought the charger and when charged it turned on only to be admin password in...

I've got a Dell Venue 11, 7130, with a fresh install of Windows 8.1. I've configured it not to sleep or hibernate, and disabled power management on USB ports. However, when the screen shuts off (Inactivity timeout, or I shut the 'lid' (When docked with it's keyboard), the USB port powers down...