USB Jump Drive Drivers not installing

I have a jump drive but dont know what brand, got it free, and it worked well
for a while, but now whenever i plug it into a new computer, it says that it
needs to install drivers but cannot find them. before i could plug it in and
the drivers would automatically install. I am thinking the file was somehow
deleted to autoinstall the drivers. But if i plug it into a computer that i
have used before, then it works fine. is there a way that i can somehow
download the autoinstall program to install the drivers or just have to use
it with computers i have used before. This is hard because i use internet
cafes and it just depends on if the computer i have used before is open or
not. thanks for any help