Go back to Device Manager.
Right click on VGA Controller, click Properties, click Driver tab, click on Update Driver button.
Upgrade Wizard will appear, click Next.
Make sure there is a checkmark next to "Search for suitable driver for my device". Click Next.
On next screen, make sure there is NO checkmark in any of displayed options, and click Next.
Windows will search for your driver, and it may find it. If it does, accept it, and Windows will install it.
If no driver is found, we'll have to find it for you, but it's a next step.