CMOS battery replacement

[meongroup]

Startup screen advises the need to replace the Internal battery  (CMOS power)  I cant find this battery loacation in the usual places - under bottom covers etc.

Need informed advise as to its physical location

[Huffer · Accepted solution]

It's on the system board. See p. 69-70 of the Service Manual here:

Manual

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[GBL84]

Hello

Please go through this Guide : http://h10032.www1.hp.com/ctg/Manual/c02657369.pdf

RTC battery (see RTC battery on page 69) 

Try this : https://www.youtube.com/watch?v=XkmW9vMBoDc

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Thank You,

GBL84

I am not an HP Employee

[Huffer]

Video is good. First place you see the CMOS battery is at 7:30 when he removes the motherboard.