Some members are using some HP USB STORAGE FORMAT TOOL to bring back sticks. Worth a try if these are out of warranty.
Bob
I have three USB memory sticks - two out of the three work - the Kingston has stopped reading. When I plug this in the LED flashes on the stick but nothing else happens.Do I assume that this is now "Terminally finished" or is the some action I can take

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic