Msg which i get :- one of the usb devices attached to this computer has malfunctioned and windows does not recognize it. try reconecting the device. if windows still does not recognize it, replace the device

In most cases this message is fairly true and accurate. Whatever it is that you plugged in is most likely broken. Two things you can try to test this: 1. Plug it into another USB port in your computer, if it is the same message, move to step 2. If it works, then there may be something wrong with that USB port on the computer. 2. Try the device on another computer. If you get the same message, the device is probably broken. If it works, then most likely there is something wrong with the USB ports on your computer. Let me know if you need more assistance.