Pen drive.

Hello,
I have a 512 mb kingstone pendrive.Some months ago i entered it into my usb port of the ahead side of my computer.Then my pendrive became dead.When i entered it into my computer's usb port.The next times when i entered it,my computer did not support.I have informed by a mechanic that my motherboards + - are the same.This is the cause of crashing.Now what can i do to repair it.Please send me a helping message soon.