Resetting from Within BIOSRemoving the CMOS Battery Resetting the Jumper Community Q&A This wiki How teaches you how to reset your Windows computer's BIOS (short for Basic Input/Output Settings) to factory settings.
You can do this on most computers from the BIOS page; however, if you're locked out of your computer's BIOS, you'll need to reset the BIOS by opening your computer's housing and removing the CMOS battery from the motherboard, or--in the case of desktops--resetting the jumper switch on the motherboard.
You can enter the system BIOS or Setup on a Dell PC by pressing F2 at the Dell loading screen.
(Figure 1) Figure 1: BIOS Loading Screen Or by pressing F12 and selecting BIOS Setup from the menu.
This is called the ESCD (Extended System Configuration Data) and this is usually stored in additional non-volatile memory also referred to as NVRAM (Non-Volatile Random Access Memory) Over the years as technology has changed people still refer to the BIOS as both CMOS and NVRAM, however they are subtly different.
The CMOS contains the BIOS and its settings, the NVRAM contains the ESCD, updating the BIOS will not clear the NVRAM.
To determine the BIOS version of your motherboard, press [F2] to enter the BIOS setup utility during bootup, and check the BIOS version from the Main menu. Also ASRock motherboard MUST use ASRock's Flash utility to update BIOS, those uncertified BIOS flashing tools will cause motherboard damage.
Also ASRock motherboard MUST use ASRock's Flash utility to update BIOS, those uncertified BIOS flashing tools will cause motherboard damage.
The BIOS also contains instructions that the PC uses to perform basic instructions, such as whether to Boot from Network or Hard drive, which drive to Boot from first.
BIOS is also used to identify and configure hardware components in a computer such as the hard drive, floppy drive, optical drive, CPU, memory, Plug and Play devices etc.
Well first you’ll need to figure out the current version of the BIOS.
In this article, I’ll explain multiple ways you can determine the BIOS version.