|Go to Radio Shack, ask for electrical Contact Cleaner. The rust you speak of is more than likely water stains with disolved dust & dirt or tobacco smoke.. |
There should be little inside a Laptop that would actually Rust, (Iron Oxide) unless you let it sit for a long time to dry out.
Try the contact cleaner and a soft tooth brush on the easy-to-get-to parts. Should work on all edge connectors, though a pencil eraser works OK too.
Isopropyl alcohol should work too Do Not use Grocery store Alcohol. Look for the highest % Alcohol by Volume you can find.
There is nothing to learn from someone who already agrees with you.