Re: Upgrading I350-T2 driver from v12 to v21 causes 2012R2 to bluescreen!

Hi Ovalpiston,

 Both way can be done, you can uninstall the driver or extract them and update in device manager or run it directly. It is a straight forward installation.
Try this website for the serial number, if you stil cannot access, go to google.com directly and type in Intel 000007022 in the search field to locate the website 
http://www.intel.com/content/www/us/en/support/network-and-i-o/ethernet-products/000007022.html

What is the brand and model of your system? Have you tried updating your system BIOS ?

Thanks,
wb