maybe you need to update AGP motherboard drivers before you install it?
put your old card back in and go to the Matsonic website to see if there are any moterboard Bios or driver updates.
download and install these, then try the new agp card.
Surface Pro 5 News - release date, UK price, features, specs
Gear VR vs. Daydream: Which delivers the best VR experience?
iPad Pro 12.9 vs Surface Pro 5
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.