Which means there's already an empty slot in there for the graphics card. No graphics card was actually ever installed when I bought it, right
Yes if you had integrated graphics, there is not graphics card in the system. It was running off motherboard graphics....what to do
-Boot up, go to device manage and uninstall display drivers, Power down your system
-Take the case off and insert the new graphics card in the appropriate place
-Boot computer up and install new graphics drivers.