When I plug in my LG Optimus V to my computer via USB cable, the USB notification does not come up (it used to, though), and my computer shows me a notification/box/list of USB ports with a statement that says "USB device not recognized. One of the USB device attached to this computer has malfunctioned, and Windows does not recognize it.
I searched quite a while to and finally find the LG Optimus V drivers on the LG official site. This is a larger file but will have all of the drivers you need. Install the Drivers WITHOUT the LG Optimus V hooked to the USB Port. Once the installation is done, NEXT plug the LG Optimus V in to the USB port and wait a couple of seconds. You should see a little USB symbol appear in the upper Left of the Notification Bar. Open the Notification window and Press on the USB notification and choose Mass Storage Mode. LG-Optimus info
LG Optimus V Drivers Download
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