6g nano wont connect to computer / charge

My 1.5 year old 6G Nano all of a sudden has stopped working.

It wont connect to my Laptop (Dosnt even come up on the USB icon) and therefore will not charge or work.

Not happy. Tried on power point chargers, different computers and still the same.

So is it stuffed. No need to be nothing has happened to cause any issues.

Help appreciated.

Cheers