CompTIA A+ 220-701: 1.2 – BIOS and CMOS

Professor Messer | Jun 21, 2010 | Comments 3


We rely on the BIOS to test our computer and start our operating systems, but what is really happening under the surface? In this module, you’ll learn about the BIOS works and we’ll demonstrate the basics of starting and configuring BIOS settings.





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Filed Under: CompTIA A+ 220-701

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  • Anselmo Diaz Valiente

    Just a minor nibble: in video1, Prof. Messer says the battery is of type Li-ion, but it is in fact Li-Mn (lithium-manganese). :)

  • http://www.facebook.com/ritchiej Josh Ritchie

    yeah. i had to replace my CMOS battery on a toshiba 2005 notebook.u00a0 it needed to be soldered on. pain in the ***. ;/

  • tr patel

    All who take advantage of your humanity are highly obliged and should give it back when their turn come. God bless you sir.