How old is "really old"?
Any specific controller name or model number? Connectivity (USB)?
Update your post to include full system hardware specs and OS information.
In Device Manager > View is "Show hidden devices" checked?
Does the controller work on other known working computers?
Do other known working controllers work on the current computer and ports in use?
Determine if the controller failure follows the controller or stays with your computer.
Where are you getting the controller drivers?