Thank you for the reply! It does work on other computers just fine. I scanned it and didn't find anything. When I held down the shift key and plugged it in, it did the same thing...instant blue screen. I do want to tell you that this trouble began when I reloaded my system. I first noticed it when I turned on my "Veg-N-Rtv device...(it allows me to watch TV on my computer) it also goes thru USB. I have disconnected it since but flash drives don't seem to work either now. What do you think?