OK so your onboard video works. What OS are you trying to install to the system? Also, you install the OS first. You get the basic Operating System on the computer first. Then you make sure that you have a connection to the internet.
Once you have internet access, you install some type of antivirus on this system. MAKE SURE YOU PUT ANTIVIRUS ON THE SYSTEM. The reason for doing this is that you have a basic Operating System on the computer that has not been patched with all the updates, hot fixes, service packs, and patches.
So once you have internet access, and you have installed some type of antivirus on the computer, you will begin Window's Updates.
This will be a long process and can be several hours so be patient. Continue with Window's Updates until windows can't find any more updates to apply. Once this has been completed this I would attempt to update the bios of the motherboard. Instructions for this can be found on the manufacturer's website.
When the bios are successfully updated, then you should not have a problem with installing your video card. Also if you have a motherboard cd with specific drivers that Window's Updates have not resolved and installed for you, then use the motherboard cd to finish up with the few missing devices that may be in device manager.
Edited by arlattimor, 24 July 2017 - 08:19 AM.
CCNA, CWNA, MCITP, MCSA, MCT, MCP, Security+, Server+, Linux+, Network+, A+, CNST
Network Security Engineer