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 Post subject: Clear CMOS via Mobo jumper vs Loading Default values in BIOS
 Post Posted: Thu Sep 15, 2011 5:15 pm 
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Joined: Tue Jun 10, 2008 7:44 pm
Posts: 358
Location: Bellevue, WA, USA
Hi Scott,

what is the difference between clearing the CMOS by using the motherboard jumper vs just going into the BIOS and loading default values?

Thanks!
-Paul


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 Post subject: Re: Clear CMOS via Mobo jumper vs Loading Default values in
 Post Posted: Thu Sep 15, 2011 7:28 pm 
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Joined: Sun Feb 04, 2007 11:44 am
Posts: 5880
In the end the results should be the same, but the methodology is different. Clearing the CMOS does just that, clears all values in the CMOS RAM (i.e NVRAM) to null. Upon the next boot, this will cause an error forcing the system into the BIOS Setup, where defaults will be loaded from ROM, after which they can be saved upon exit.

Setting CMOS values to default shortcuts the process, loading default values from ROM into the BIOS Setup directly, where again they can be saved upon exit.

What is the difference then? I've seen cases where CMOS values were corrupted in such a way that the system wouldn't even get into the BIOS Setup, so clearing the CMOS was the only option.

Bottom line: Clearing the CMOS is the more "brute force" method, and may be necessary under some circumstances. Scott.


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 Post subject: Re: Clear CMOS via Mobo jumper vs Loading Default values in
 Post Posted: Thu Sep 15, 2011 8:41 pm 
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Joined: Tue Jun 10, 2008 7:44 pm
Posts: 358
Location: Bellevue, WA, USA
Interesting, thank you Scott.


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