You can replace the motherboard as cheaply as you can replace the bios chip and replacing just the bios will probably not fix the problem.
Check Ebay and Pricewatch for slot 1
Thong_Ispector
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I just checked Ebay and they are all over the place from 99cents to $20 with shipping about $12...
You can probably go to any PC store and dig one out of scrap parts and pieces bins for less than shipping costs...
Thong_Ispector
Practically a Master Poster
638 posts since Nov 2004
Reputation Points: 16
Solved Threads: 19