How to Reset BIOS via Resetting from Within BIOS

Access your BIOS. Turn on your computer
and press the key on your keyboard to enter
the BIOS. This is typically the Del (delete) key.
Pre-built systems from major manufacturers may
use a function key such as F1, F2, or F10.
If you are using Windows 8 with a UEFI
motherboard, you may not have access to a
traditional BIOS screen and instead will
need to use the Advanced Boot menu. See
Step 4 of this guide for more details.
If you cannot access your BIOS because
you are locked out with a password or it has
been corrupted, use one of the following
methods following this section.
Find the factory reset option. The location
and wording of this option varies for every
different BIOS. It will typically be called "Reset
to Default", "Factory Default", "Setup Defaults",
or something similar. It may be located in one of
the tabs or it may be an option listed near the
navigation buttons.
Select the option or press the button to
load your factory defaults.
If your BIOS does not have this option, use
one of the following methods following this
section.
Save your changes and confirm your
selection if necessary. This will often be
combined with the process of exiting a BIOS.
Your computer will automatically reboot. If you
need to change your BIOS settings once your
BIOS resets, you may need to reboot your
computer again and enter the BIOS to change
them.