However, there are methods which can make Windows fix these types of error.
TheUSB unit Not Recognizederror generally comes up whenever the Windows driver malfunctions and is unable to detect your pendrive.
So follow the below steps to make your things done right now!
If that doesnt work, unplug your PCs power supply from the back of the CPU.
This should hard reset your gear and make Windows software recognize the connected hardware.
TheUSB equipment Not Recognizedmay be because of a dirty RAM or it being loose.
you’ve got the option to open your CPU, locate the motherboard and manually remove the RAM.
Wipe it clean with a satin cloth.
You should do this if you are conversant with the internals of a PC.
Now remove the USB pen drive and insert it again into the USB slot and voila, it works.
This method solves most of the USB not recognized errors.
press the Universal Serial Bus Controllers and check whether any entry shows a yellow mark as indicated above.
In case it does, then right grab the entry showing the yellow tag and press uninstall.
Now kickstart your PC again and plug in your USB pendrive.
This should work and your USB pendrive will be recognized by Windows making it easy for you to work.
source: www.techworm.net
