USB Flash drive problem - No fix found

Hi.

Basically I have an annoying problem. I have a Gigabyte AM3+ 78LMT USB3 Mobo. On the case I have two USB ports on the front panel. When I try to connect my USB pen drive it doesn't recognize it in My Computer, but the drive does show up in device manager. Furthermore, all other devices such as my phone and external HD are working fine but this flash drive just doesnt show up in My Computer.

Another thing, when the pen drive is plugged in, nothing works. Any program that I try and use crashes pretty much instantly.

Any idea?