BIOS settings

This is the manual for that model. It has a full teardown exploded diagram, and I can see no mention of a CMOS battery.

The only references to a battery are the main one, on page 37.

Solved: Does the HP Pavilion 15-cc have a CMOS battery? - HP Support Community - 8608227.

Computer says no, I guess. :wink:

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I did a check on the main battery and it’s normal. I think it was a corrupted BIOS and hopefully flashing the updated firmware fixed the problem.

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Wish I’d have seen this earlier … Many modern laptops/netbooks do not have user replacable bios coin batteries, sometimes what they do have look more like capacitors and are either soldered directly onto the mobo or onto leads coming off it and sometimes not even that, they just rely on the main battery not going flat.

I think all laptop manufacturers should do this. No reason for a laptop to die over a $1.50 battery that most people wouldn’t be capable of replacing,

They don’t die so long as the main battery is still capable of holding a small charge and even for those with replaceable main batteries that can be disconnected the worse that can happen is that bios revert back to their defaults … they might even be baked in settings anyway.

Even a large capacitor would help, just long enough to survive a battery swap.

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I believe that’s what it is. I was chatting with a guy on YouTube and he said it was a capacitor.

That’s basically all a rechargable battery is, a slow discharging capacitor.

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OK - I work IT for a major bank, including laptops, and this is a first for me. This model doesn’t appear to even have a CMOS battery. I watched this video all the way through removal of the system board, and never saw a reference to any battery but the main brick.

For anyone interested, it would look like this, with the possible exception of having a different colored cover, possibly yellow.

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Not that I’ve dismantled many laptops but I’ve not seen one of those in years.

Not to go too far off topic, but every Dell and every Lenovo I’ve ever cracked open has one. My own Asus gaming laptop has one too. They’re usually stuck to something inside with double-sided tape.

Ah … the last two I’ve taken apart were from Medion and I think the previous one to that was Samsung or Toshiba, none of them had coin batteries … as I said I generally don’t touch laptops (I’m not in the trade but am the friends and family go-to fixer for upgrades and when things go wrong). It actually makes sense that gaming laptops would (or should) still use them.

Can confirm with regard to Dell laptops, which is what we use at work.

That’s a handy video to have. Thanks. His unit is much cleaner than mine.

I took out the battery again today just to look around. The cmos capacitor completely discharges every time you disconnect the battery. I think that’s just the way it’s made. It’s no biggie but I get Cmos 502 (checksum) error every time the battery is disconnected. You just hit enter and it reboots to the default bios settings. Easy to change the settings. BTW in the BIOS it says HP recommends turning virtualization off. I’m wondering if it’s a money saver decision to put a capacitor in there instead of a battery. Probably less service calls.

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