The key is you stated a recent "format" was performed, I assume this meant the operating system was reloaded from the ground up on this machine. If this is the case, the USB drivers might not be loaded correctly. It is unclear if the USB is onboard or a PCI expansion card? If the USB is onboard, then the drivers would be from either the motherboard supplier or the machine supplier. If the USB is a PCI card, the PCI card supplier would have the drivers.
If there is a yellow question mark under the Harware Device Manager, you need to load/reload the USB drivers. Does anything work on USB at the moment? Mouse, keyboard, flash drive?
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