Another Dead Compaq Presario F700 / HP G6000
I flashed my bios today which killed mine. If the bios chip is socketed (which I don't know if it is or not), it may be possible to physically replace the bios chip with another. There are companies who flash new chips (badflash is one example).
Otherwise it's nearly $400US for a new motherboard from HP (includes free shipping back and forth). I bought mine refurbished for $450 and it ran for a year before I killed it, so I would probably just buy another laptop (with a bigger drive and faster CPU).