A common situation, you insert your thumb drive into your computer and nothing happens. You remove it, insert it into another machine, still nothing. There are 3 possibilities:
- You have broken the connector on your thumb drive
- You have lost or corrupted the boot record on the thumb drive
- Your board or chipset is dead, and a circuit(s) is broken
The first 2 items can be corrected. The 3rd is almost impossible, and 
most repair companies refuse to accept dead boards because consumers refuse to pay for the repair and expenses involved. If you have a thumb drive with the 1st 2 symptoms, you can have your data recovered for under $90 most of the time.
