recently i brought a cable with usb at same part and plug in one usb in computer and one usb in tablet.I mention that my tablet was turn on! After that my tablet turn off and i can not turn on only if i use this cable from pc to tablet! The power cord cable doesn't want to turn on my tablet! Is not my charger problem because i tested and my tablet just turn on with the usb cable from computer! Please help how can i change the charging from usb to adaptor cable? Thanks very much!