I have the same problem. Several installations of VB did not bring a solution. Driver is marked as "not working properly. windows cannot load the drivers required for this device (code 31)"
The further result is, that the network gets unplugged when activating the driver for a network-device (e.g. the lan-adapter). if the driver for the adapter is deactivated, the network works fine again.
does anybody has a similar problem and maybe a possible solution for this problem?
thanks in advance.