Unfortunately there's not much you can do with a system that old.
I'd suggest buying a new HDD, you can get even a 1TB drive for under $50 these days and it'll be re-useable in the event you get enough money to buy a new system.
I'd also try upgrading that ram. Back when I was a broke college student (and before that too
) I used to go scavenge parts from old computers people threw away. Check with your local PC shops too, try and talk to the techies in back. They're usually more friendly
might decide to help you out.
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