Hi, i bought Samsung galaxy ace 3 lte recently, and at first i didn't have problems with usb, but yesterday i tried to connect, and it says connected as Media device(or something similar, i've got android 4.2.2), it's charging, and i hear the sound of connection both on comp and device, and on comp doesn't pop up anything. Nothing in My computer... Tried to update drivers, it says access denied in device manager, on phone it says that i must have service pack 3 Windows media player v10 on XP. I have Windows 7 Ultimate, and WMP v10 from the start... Please help! 
