All of a sudden a notification might popup on your screen mentioning “USB device not recognized” or “One of the USB device attached to this computer has malfunctioned, and Windows does not recognize it”. These problems falls under Windows CODE 43 which states that “Windows has stopped this device because it has reported problems” Eventually this will lead to the failure of all of your USB ports; to further elaborate all USB ports will stop working, so if you want to use any USB device it won’t work. To make the situation more annoying this message will keep popping up every minute. The problem is very common with Windows 7 and Windows Vista.
The first thought that might occur to you would be if you have damaged one of your USB ports accidently or there is any hardware failure. You will find different suggestion and methods of healing the problem including Uninstalling and Reinstalling the USB drivers, playing with computer registry and Bios. And when you will get exhausted you will find one last option of reinstalling the Windows. These tricks will make you more frustrated and in most of cases the problem would still be there.
Well, the solution to this problem is very simple, just turn off your computer and detach the power cable so that no current flows through the system. Because, even if you shutdown your computer your motherboard is still getting power. Sometimes it happens that your motherboard gets stuck at some problem and needed to be turned off. When you will disconnect the power and reconnect it afterwards the microprocessors on your motherboard will reload the drivers of the USB ports and you are back to the working USB ports. If you are having the same problems with your Laptop just turn it off, and detach the laptop battery for few seconds. Put it back in and turn it on, your USB ports would be working fine.
I myself and dozens of other people tried this and it worked fine, tell me if this worked for you?