The instructions I am using say "Enter recovery mode by turning your device on while holding down "Volume Down" button and "End call" button then press the "Power" button to power on your device, the hourglass stays on the screen."
If I connect the phone via USB and have debugging on, the computer can see the phone so I presume the driver is installed OK but when I attempt the above, Windows (8.1) pops up saying the usb device recently attached has malfunctioned and windows can no longer recognise it.
What am I doing wrong here?

