Why doesn't my laptop recognize any USB or other drive I plug in?

Why doesn't my laptop recognize any USB or other drive I plug in?
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1 Answer

Answer :

answer:Don’t know the exact reason. But try going to the Control Panel / Device manager and make sure that the Universal Serial Bus controllers (at the bottom) are listed. That’s the hardware that manages the USB connections. What you could do is as follows: 1) Scan for changes (i.e. look for new USB devices) if that doesn’t work, then 2) delete the USB devices listed below in Device Manager, one by one. 3) scan for hardware changes (they will all come back)
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