USB Memory Stick Problem

I wonder if any one can help me with this problem.

I recently purchased a 64GB USB memory stick. I placed it in my USB portal and it did load up as a device - but I won't load up on the external F drive.

I do have other USB memory sticks and I've never had any problems with them before. So, I can't fathom out what the problem is with this one.

Much appreciated.

See if this is any good

http://www.wikihow.com/Fix-an-Unrecognized-USB-Disk