Dell BIOS configuration

Reset Dell BIOS Settings on Inspiron and Latitude laptop.

Need to reset your Dell BIOS settings to their default configuration?

It’s simple and you will be able to do it very quickly.

In fact there are multiple ways to reset you Dell BIOS settings and each one can help solve different issues with the computer systems.

Let’s take for instance, out of curiosity you were experimenting with BIOS settings or you were changing boot sequence you would approach the BIOS reset more differently than when the BIOS settings have been corrupted.


The acronym BIOS stands for Basic Input Output System. This is the first program that loads when you turn the computer on before even the Operating System starts loading. It controls the initial interaction of the Hardware and other software. This is why the BIOS reset can also fix some OS boot issues.

Another instance is when your computer shows no boot device found error, resetting the BIOS to default can fix that.

Here are the ways to reset the BIOS settings in order of difficulty.

Reset Dell BIOS using BIOS menu

Turn on the computer and if it’s already on then restart it. As it shows the Dell splash screen press F2 to interrupt the normal boot process. You should now be in the BIOS menu.

Resetting Dell BIOS menu Settings to default
Resetting Dell BIOS menu Settings to default

Note: A few of the laptops may use a different key to enter into BIOS settings. The majority of the Dell Laptops use F2. If the F2 key doesn’t work, you can watch at the bottom of the screen the key that you can use to interrupt the normal boot sequence and enter BIOS settings.

On the BIOS settings screen, use the keyboard to navigate. Press F9 to reset the BIOS settings. Remember the key for your dell might be differ but most Dell laptops use F9.

After that press F10 keys to save the settings and allow the laptop to boot with the default configuration of your computer.

Clearing BIOS setting by removing the CMOS battery.

This is easier on desktops but a bit advanced when it comes to laptops. You may need to consult your dell laptop manual to locate the CMOS battery.

All computers have the CMOS battery which powers the CMOS even when computer is switched off and disconnected from power supply. The CMOS stores configuration settings and powers the computer clock hence the reason why your computer always shows the correct time even after a black out and in case of a laptop if you remove the battery and disconnect it from the power supply.

Removing the CMOS battery resets the computer configuration and time to factory settings.

Dell CMOS battery
Dell CMOS battery stores boot powers the CMOS which stores boot configuration settings

Now how to remove the CMOS battery and reset the BIOS

  1. Power down the computer
  2. Disconnect it from the power supply and remove the battery
  3. Remove the computer cover
  4. Locate the CMOS battery, it’s about a coin size if you cannot find it use the manual of you laptop.
  5. Now remove the CMOS battery and
  6. Before putting it back in, press and hold the power button for 10 seconds, this clears flea power
  7. After the 10 seconds, its time to put back everything as it was

If you have successfully reset the BIOS using this method the system will ask you to correct the time. This is due to the computer losing power from the CMOS battery hence you will need to correct the time.



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