I have a 16GB flash drive from micro center. (I am an aspiring writer and photographer), and all the sudden today when I was transferring pictures, my SD card said that it couldn't transfer. Then, I found out that my flash drive didn't show up on the computer. I've tried everything. Restarting my computer, device manager, right-clicking and managing my computer, a different USB port, a different computer even. It won't show up anywhere. There is nothing visibly wrong with the flash drive either. (Oh, and I have an Acer laptop with Windows Vista.)