Chap has an old XP laptop and wants to know how he can transfer data from it to a USB thumb drive. He tried to and it didn't work. Leo wants to know first if the laptop can see it. If not, he should try another. Flash memory can die and the thumbdrive could just be bad. He should also try both USB ports. If nothing shows up, his USB port could be dirty or could have shorted out. That's not likely, though. He should try another USB device like a mouse and see if that will work.