Have you tried the manufacturer or builder? If you can give them the serial number, they usually will try to help if it is still in warranty.
You can try Belarc Advisor (
www.belarc.com/free_download.html)if you can access the internet. If you can, download and install it and run the program. That will give you the license numbers and keys for all the software installed on your computer and it will also advise you of any missing updates from Microsoft. Be advised that this program is for personal use only.