USB DEVICE NOT RECOGNISED: One of the USB device attached to this computer has malfunctioned and windows does not recognised it.

The problem you have stated can be due to several causes. Please eject your USB drive from your computer and insert it again. If windows does not detect it, then restart your computer and try again. If the problem is still there, please check the Device Manager if the USB port is properly working and if it is possible to use the troubleshoot. The best way to check whether your USB device is properly working or not, insert it to another computer other than your's. If the problem persists, check your USB device's warranty period and simply go for the replacement and contact your retailer or service provider.

You can go to Device Manger by following the steps below:

My Computer Icon>Right Click on the Icon>Properties>Device Manager

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Hope this helps,

Mrityunjay.