HP Pavillion DV2000 CMOS checksum error

Karsten75 · Jul 18, 2016

If I leave the aforementioned lptop off mains power and the battery runs down, I get the error message that there was a CMOS checksum error. If I press F1, then the laptop boots up but time/date is reset.

On desktops, I'd guess that this means the CMOS battery needs replacing.

All my Googling has not brought up that the laptop has a CMOS battery, although I'd hazard a guess it must have one.

Is that the issue?

I can also not find a service manual for the laptop. Specific model number is DV2416us.

Any help running down a good error cause and a service manual will be appreciated. I'd hate to have to open this laptop to replace the CMOS battery.

1shado1 · Jul 19, 2016

Does it look like this?

Karsten75 · Jul 19, 2016

yes, except I've never seen a color picture of it, nor that particular splash screen. It was delivered here without a hard drive and I've been battling to figure out if it is worth repairing.

1shado1 · Jul 19, 2016

Karsten75 :

I spent 3 minutes Googling and found this:

http

/h10032.www1.hp.com/ctg/Manual/c01035657

Go to section 5.2. "Disassembly Sequence Chart"

Looks to like you have to remove one small access panel
(hard drive cover, page 122 of the pdf, I believe) to get
to the CMOS/RTC battery.

Karsten75 · Jul 19, 2016

Well, thanks a bunch. That's the one. Actually, I've been looking at that damn battery all along. It's actually right next to the missing hard drive.

Your help has been invaluable. Much appreciated.

1shado1 · Jul 19, 2016

Karsten75 :

You're very welcome. I don't get to help often!!

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HP Pavillion DV2000 CMOS checksum error

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