2 of 5 USB ports will not allow the pulged in device to be seen?

[Rapidrob]

I just loaded Linux Lite 4.8 onto a friends HP Pavilion 23 All-In-One desktop computer.
This computer has 6 USB ports. Four in the very back and two on the left side of the frame.
If I plug a USB thumb drive into the two ports on the left side of the computer, nothing happens. No icon is shown on the desktop. These ports would be the most convenient to access for everyday use.
If I go to "Disk" it shows the device mounted but it is at a location which cannot be opened by clicking on any file folder. ( File System Root which has a large black X on it)  There are many other files shown, but none show the contents of the USB drive.
If I plug in the USB thumb drive to any of the four ports on the BACK of the computer, the drive files are opened instantly with an icon shown
I'm at a stand still on this problem.

[Rapidrob]

I found the problem.

[Muhammad Umar Farooq]

I just loaded Linux Lite 4.8 onto a friends HP Pavilion 23 All-In-One desktop computer.
This computer has 6 USB ports. Four in the very back and two on the left side of the frame.
If I plug a USB thumb drive into the two ports on the left side of the computer, nothing happens. No icon is shown on the desktop. These ports would be the most convenient to access for everyday use.
If I go to "Disk" it shows the device mounted but it is at a location which cannot be opened by clicking on any file folder. ( File System Root which has a large black X on it)  There are many other files shown, but none show the contents of the USB drive.
If I plug in the USB thumb drive to any of the four ports on the BACK of the computer, the drive files are opened instantly with an icon shown
I'm at a stand still on this problem.

[Muhammad Umar Farooq]

I have up-loaed Linuxlite 5.0 by making Bootable USB and system is working well but my wireless USB MT-Link, MT-WN641 is not accepting Firefox operating system. Can someone solve this problem so that my problem be resolved. I do not know either there is a driver issue or something elase in operating system.
Thanks and regards