Remember that your coins don't "live" in your computers. Your systems are just an interface that allows you to interact with them. Your coins exist on the ledger and as long as you do not lose or expose your private keys your coins are perfectly safe.
>if you have not already,
MAKE A PAPER BACKUP with your old system, as long as you have this there is nothing you can do with your computers short of exposing your private keys to the internet that can imperil your coins.
>be GODDAMN careful with those private keys, do not have them on a USB fob you are plugging into online systems, do not use a networked printer to make your paper backup.