Asus zenfone 5 USB device not recognised by windows 8.1 I have zenfone 5 (A501CG) with Kitkat 4.4.2. When I connects mobile to my laptop it shows popup saying that "USB device not recognized. the previously connected device is malfunctioned". To solve this problem, i have did following:

From control panel->hardware and sounds->device manager. there is one device named **
Unknown USB Device(Device descriptor request failed

Here i have updated device driver it says that "device driver is up-to-date". But problem is still there. Can anybody please help me?
On your smartphone:

Go to Settings -> Storage -> Click on the USB icon (Near of the clock) -> Mark Media Device (MTP).

Then wait a moment and this should work.