Micro SD not mounting - A511

robston

Tried using different cards, reformatting cards, factory reset, and it still won't mount an SD Card. If I reboot with card inside machine the card appears and starts in the ' Preparing SD Card ' status. However this does not change, and if I press the Mount SD card option in the settings then the card preparing icon disappears. Any ideas? Would an update affect the card slot hardware/software? The slot was definitely working before Jelly Bean, by I rarely use the slot so I couldn't tell you if the fault started straight after the upgrade or just recently.
Thanks.

Note when accessing Micro SD cards via USB cable all cards appear and act as normal.