What are some common problems with BIOSes?What can you do if your BIOS is not working properly?How can you fix a corrupted BIOS?What are the benefits of upgrading your BIOS?What are the risks of upgrading your BIOS?Can you backup your BIOS before upgrading it?Why should you upgrade your BIOS?Do I need to update my motherboard's firmware when I upgrade my BIOS?If I update my motherboard's firmware, will that also update my CPU and memory modules?When should I replace my motherboard's battery if I am updating my BIOS or using a new motherboard?" BIOS (Basic Input/Output System) is a set of instructions that tells the computer how to start up. A typical PC has two types of bios: an EFI (Extensible Firmware Interface) bios and a legacy bios.