I just bought a thumb drive for my computer. I plugged it in the first time and the computer recognized it. I take it out and then try to plug it in again and nothing happens. Then I try my card reader and the same thing. Nothing happens. The computer recognizes that it's there but it won't work. It says that it loaded the device driver for the hardware but cannot find the hardware device. I went into the registry and cleared the upper and lower filters then restarted and the same thing happened again. I even unchecked in the usb hub about not disabling device to save power.