…… Did you turn on Virtualization Support in the BIOS? Had an issue with a laptop that ran a XP system virtually on a physical Windows 7 laptop. All was well however if you wanted to mount a USB stick to the VM it would end up with a driver error. The exact message is “The connection for the <Name of USB Device> was unsuccessful: Driver Error”. Googled it but couldn’t really find what I was looking for, lots of errors regarding device in use and others. Decided to check if Virtualization Support was turned on within the BIOS and found it disabled, enabled the support and immediately the mounting of a USB stick into the VM is now working fine. This most likely will go for USB based harddrives or other devices that will mount as a drive as well and might also apply to other operating systems that you’ve virtualized. Next is testing this with an ODB2 dongle with software that only is supported on Windows XP (as that was the driver for having a VM).