Are you adventurous? I too had a situation where "someone" in my one man operation couldn't leave well enough alone and bricked a BIOS. I ordered a replacement unprogrammed chip from Digikey ($1.26) and a cheap EEPROM programmer kit from Amazon ($13.95). I followed one of the many "How To"s on the internet, got the new chip programmed and was back in business. It was an adventure though, as my cheap programmer's socket pins were labeled backwards, and most guides assume a baseline level of knowledge that exceeded my own.Any help is appreciated.
In the end, I got it done though and the hardest part was the soldering. If you have a socketed chip, should be much easier . My only advice if you try it, is to buy at least two of the BIOS chips, mine were less than $2.00 each (with minimum Shipping being $4.99), and I went through one before i realized the programmer labeling was backwards and got it right the second time.