Why would changing platters fix a problem with the rom? That's like changing a lightbulb when switch is busted.
If you swap platters then you still lose your data, the platters are where it's all stored.
I suggest you save up a dollar a day. And by next year this time you'll be able to get a pro to look at it, and if it's a simple job, done for that price.
Statistics: Posted by Keatah — Yesterday, 18:22