When you turn your computer back on your BIOS will be functional and you should be able to use your computer normally again. Typically it can be found somewhere near the BIOS battery.
In newer systems the flash ROM is soldered to the motherboard and cannot be replaced. This article has steps you can perform to restore your BIOS and save your motherboard. A lot of computer technicians are other experienced computer users update their BIOS at some point usually because of a motherboard reporting temperatures wrong, not detecting certain hardware, not working with certain hardware or to allow the motherboard to accept larger hard drives.