@TruckCentreWA

I am really sorry for the inconvenience.

We need to determine whether it is a hardware or software issue.

Try windows + x

go to device manager

expand usb

Uninstall all the entries below usb

Restart the computer

Connect the usb device and check.

If it is still not working then we have to do a refresh and reset

click on start - settings - update and security - recovery - reset this pc - get started 

or 

on start - type here to search - type reset this pc - click on reset this pc on the top - click on get started 

It will show you keep my files and remove everything

chose keep my files 

chose the account - type the password - click on local reinstall - click on reset 

It will be in progress.. 

login to computer and start using the computer. 

If it is still not working 

click on start - settings - update and security - recovery - reset this pc - get started 

chose remove everything 

click on local reinstall - just remove my files - click on reset

It will be in progress

Note:

If you do refresh ( keep my files ) - all your personal files like pictures, music , documents , videos will still be intact.  Only the applications will be lost

If you do reset ( remove everything ) - you are doing a factory default.  It will become like a day one computer.  It will wipe out everything and take your computer to day one like a new computer. 

You can also do the recovery in an alternative way..

There are two alt keys on the keyboard. If you look at the bottom row of keyboard you can see the one on the left side of space bar and the other on the right side of space bar. The alt key on the right side will be looking like alt, alt gr or alt car. Turn off the computer. Hold the alt key on the left and tap f10 continuously.  It will go to repair mode. It will show you chose an option, continue, troubleshoot.  If it is not going to repair mode, turn off the computer. Turn on the computer. Hold the right alt key ( alt gr or alt car or alt ) and then tap f10 continuously. It will go to chose an option continue and troubleshoot..

It will show you chose an option, continue, troubleshoot

Go to troubleshoot - click on reset this pc

click on keep my files ( only applications will be lost )  chose your account and type your password  - click on local reinstall - click on reset

It will be in progress 

If the keep my files option is not working 

Go to troubleshoot - click on reset this pc – click on remove everything – click on local reinstall – just remove my files – click on reset 

It will reinstall windows. 

If the just remove my files is not working.. 

Go to troubleshoot - click on reset this pc – click on remove everything – click on local reinstall – Fully clean the drive – click on reset 

It will reinstall windows. 

Note: You can also go to chose an option , continue , troubleshoot by holding the alt key + tapping f10 or alt gr + tapping f10 on the keyboard while turning on the computer.  Once you see the troubleshoot option, you can stop tapping the f10 and stop holding the alt key.  Then you can try the keep my files and remove everything ( just remove by files and fully clean the drive ) by following the steps which was mentioned above. 

Even after reinstalling the windows, if the usb ports are not working then it is a hardware issue.

Which USB port is the one that is playing up? As the Veriton 4660G has (see diagram below) at #4 - 2*USB 3.1 ports (Q370)  and at #5 - 2*USB 2.0 ports (B360),.

First try to clean the ports with an electronic cleaning spray if that doesn't work then, replace the affected and faulty USB ports physically and take them out and resolder a new USB affected port, as USB's in a working environment do deteriorate and their pins get worn and affected by corrosion and dust making them faulty/inoperable and giving symptoms like you are having, best is to replace the affected USB's with new ones as that will fix your problem.

Note: replacing USB ports on a mobo is a specialist job and you need specialist tools, so don't attempt doing this if you haven't got the right tools, as you will do more damage than fix anything, btw, you can't use a bulky soldering iron that is used to solder a trucks broken wire 😁 only joking mate (brtw, I'm in Sydney and an Aussie lol) good luck and hope I've given you another option to look at.

Veriton 4660G mobo components diagram and descriptions

The only thing and most convenient thing that you can do, as its quick and cheaper and you won’t lose any data and after you can continue with the OS's that your business is running, is to change the mobo's of all those 12x Veriton N6460G and see if you can get a deal from Acer (phone them up in your area or Perth) yes I know it could be many km's away as in WA everything is great distances 😀 or a retailer to save you time and just do a PnP of all these mobos to work straight away.

The mobo for the Veriton N6460G (btw, its the same mobo as the N6660G listed below) the Acer part number is DB.VRA11.001, I’ve included a caption from the SG for your information, cheers and hope this helps you out further.