how an i fix my pcgfx370 (sony) pent.3 with xp?

i was doing a bios update and i dont know if it was the wong bios or what but it killed my computer and now it will not pwer up at all! i do however have a power and two battery lites that will not shut off and there is no activity in her at all ! is there any way i can fix this inexpensively ? Its like a vegetebal I tried removing bat.mem,ext. and leavingit set for an hour but nothing. or is it possible i blew the mem?