Does not recognize the USB device to add

I plug in the computer disk U, tips:does not recognize the USB device (with this USB-connected devices running abnormal, windows does not recognize.) I would like to ask my computer is not a poisoning? Or My Computer hardware has a problem? I have done to the system or not, ah, used for a long time ago, a perfectly good ah, all of a sudden on the inter-on into the case.But my U disk with the other computer is normal for you.While I connect the phone Can play to open the phone's memory, you can copy and delete the normal things.Please help us to address, thank you Oh ~ – ~

Usb port power supply shortage for the back of the mouth to try to change the interface try.I also encountered a similar problem, I think of the machine, in front of 4 usb, one of the plug on No, the other will be able to play with .Seems to be ahead of time what is the use of any usb device after such a mistake.Reinstall the system can not solve.U plate inserted into other computers to try, if not, u disk does not work.USP supply shortage or not I Play good for another USP I try