Buy a better laptop. Get a good A to D interface. . . If you are doing lots of midi with music synthesis, plus lots of processed effects, you will need a fairly powerful machine to run a lot of concurrent processes. You can get around that by rendering the tracks when you are through fiddling...
Hi.
You possibly can find the drivers as described in this post:
https://www.startech.com/en-us/faq/firewire-cards-windows-legacy-driver-swap
also this has additional info. . ...