My USB ports and fingerprint scanner no longer work...

This problems requires a bit of exposition and I'm bad with computers so bare with me. A few months I noticed my USBs were not working on my computer, So I tested the same USBs on another computer and they all worked so I knew something was wrong with my computer. I decided to try some "solutions" online and only made the problem worse.Before my computer would at least recognise that there was a USB and try to do something with it, only to fail miserably. If I remember correctly it would say something like "failed to install device drivers".Ever since I tried those "solutions" all it does now is make a noise when i plug in a USB. Oh and my fingerprint scanner no longer works. I remember messing around in the Device manager and messing around with things. Here is what I noticed. under the USB controllers tab there is a list that looks like this Universal Serial Bus Controllers  HP Webcam  Universal Serial Bus (USB) Controllers  Universal Serial Bus (USB) Controllers  Unknown Device  Unknown Device  Unknown Device  Unknown Device I'm certain I've done something horribly wrong...My question to you is...1. How can I fix this?2. in the event that I am unable to fix this, is it possible that restoring the computer to factory settings would do the trick?

Hello 15lrobin  It would be more helpful if you tell us what computer model number you have and what the operating system is, so that the info we give can be more precise.

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