Also take a look in "Device Manager" to see if any of the items have a yellow exclamation mark next to them.
If they do, simply remove/delete the item with the yellow exclamation mark,
(don't worry, it/they will be re-placed when the PC re-starts)
re-start the PC and then hopefully windows will search for and install the driver that is required.
This however usually works best if connected to the internet.
Although this may sound strange, I have also in the past come across this problem when a " Dial-up Modem" was not completely set up.
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If it ain't broke.
Don't fix it.