Laptop not holding charge

kakarott · 30 Dec 2022 at 11:01

My friend has a hp laptop where it was not holding charge. He bought a replacement battery few months ago and it charged fine. He's saying now that it's not charging and he has a CMOS error message.

Any ideas what the problem is?

Hodders · 30 Dec 2022 at 12:02

You'll need to post more info. What is the CMOS error exactly?

kakarott · 1 Jan 2023 at 22:16

Hodders said:
You'll need to post more info. What is the CMOS error exactly?

The CMOS checksum is incorrect. It will be reset to default configuration.

CMOS reset (502)

andy_mk3 · 1 Jan 2023 at 22:25

Sounds like the internal cmos battery may be dead. Although quite rare.

Was it a cheap aftermarket battery? They tend to be pretty terrible quality and only last a few months too.

drakulton · 1 Jan 2023 at 22:30

Is you friend just folding the screen down when he's finished using it, or does he shut it down first?

Deleted member 77746 · 2 Jan 2023 at 00:55

kakarott said:
The CMOS checksum is incorrect. It will be reset to default configuration.

CMOS reset (502)

CMOS battery needs replacing. Check power settings as well.

kakarott · 2 Jan 2023 at 08:57

I believe it was £30.

So the CMOS is wrapped in some kind of flexible plastic not like the others where you can pop it out.

Does he need to buy one where it's also wrapped like that?

ANDARIAL · 2 Jan 2023 at 09:48

pics?

kakarott · 2 Jan 2023 at 20:10

IMG-20230102-WA0002 hosted at ImgBB

Image IMG-20230102-WA0002 hosted in ImgBB

ibb.co

LostCorpse · 2 Jan 2023 at 20:10

not all the laptops are coming with CMOS Batteries seporatly
so it does demend on model.

it should looke like : https://h30434.www3.hp.com/t5/Noteb...-1273cl-CMOS-Battery-Replacement/td-p/4263830
see the first image Blue tag.

i would suggest buying it all "wrapped up" you should be able to get one from a number of online retailers/stores. there ae sold as complete units. i'm sure you can make something up but for the cost of a few £ just get the properthing.
Becarefull when removing the old battery the plastic can be hard to remove :/ at least its always 50/50 if i can do it easy or not with out damaging the cable or the plug.

but tbh like andy_mk3 said cheap bateries wont last long :/ but depending ont he age o the laptop it might be the only way to go.

if the machines doenst have a CMOS battery then its using the Main Battery (partaitioned of the first few % to use inplace of the CMOS battery)

drakulton · 2 Jan 2023 at 20:26

kakarott said:
IMG-20230102-WA0002 hosted at ImgBB

Image IMG-20230102-WA0002 hosted in ImgBB

ibb.co

It may be just heat-shrink over the battery/battery holder. Insulation tape will do the same job when the battery is changed.

kakarott · 2 Jan 2023 at 20:37

Emo_hug said:
if the machines doenst have a CMOS battery then its using the Main Battery (partaitioned of the first few % to use inplace of the CMOS battery)

Sorry what do you mean?

LostCorpse · 2 Jan 2023 at 20:39

kakarott said:
Sorry what do you mean?

you can ignore the comment. we both posted at same time and didnt see the image before. we can clearly see a CMOS battery

ANDARIAL · 2 Jan 2023 at 21:21

Difficult to be certain But it looks like the cmos battery is in a holder.carefully remove the tape as has been said to check