HP Omen CMOS Checksum error

[IanW91]

Hi i keep getting a CMOS checksum error when i boot my laptop. I recently bought it used and it sat for a long time uncharged. I am having a very hard time find the direct replacement for the CMOS battery or any  info if it even has a CMOS battery. IS it perhaps a bios issue? i have tried rolling back to a prior version but i am not sure if it really changed anything.

As a secondary question. What is the exact OEM ram stick i need to match the installed 8gb stick already in the laptop?

Any and all help for both subjects( CMOS being absolute priority, OEM ram being just a convenience) would be greatly appreciated

[praveen196]

@IanW91 Welcome to HP Community!

I understand that you are getting CMOS Checksum error.

Do not worry. I will try to fix the issue.

Please perform the below steps and check.

Set BIOS default and restart:

1. Restart your notebook.
2. During startup, press F10 repeatedly until the BIOS menu is displayed.
3. Once the BIOS menu is displayed, press F9 to restore factory defaults.
4. Select Yes to confirm.
5. Press F10 to save changes and exit.
6. Select Yes to confirm.
7. The computer restarts using the default settings.

Your laptop Support for 16384 MB of DDR4 2666 MHz system memory in the following conƭgurations

 16384 MB (8192 MB × 2)

12288 MB (8192 MB × 1 + 4096 MB × 1)

8192 MB (8192 MB × 1)

You could purchase the part from HP, use the HP Parts surfer to identify the part: http://partsurfer.hp.com/search.aspx 

And order it via the HP Parts store: https://parts.hp.com/hpparts/CountryChoice.aspx?mscssid=&ccode=ZZ&lcode=ZZ 

Or alternatively, Contact HP for setting up an order/service via phone support   

Keep us posted,

If you would like to thank us for our efforts to help you, 

Give us a virtual high-five by clicking the 'Thumbs Up' icon below, followed by clicking on the "Accept as solution" on this post, 

Have a great day!
 

[IanW91]

I have done the bios reset a few times with no benefit from it. the computer still throws the same Checksum error upon boot up.

i found locally a matched batch ram set for my laptop from a mac that was identical to what the stock ramis  so i installed that and it works beautifully 

[IanW91]

the parts checker does not tell me if it is a wired CMOS or a cr2032 battery. I am at a loss. I would prefer to only have tear my laptop apart once to replace it and not have to open it up to figure out what type it is in particular

[praveen196]

@IanW91

I understand your concerns.

In that case, I would suggest you contact our phone support check for the support option. They will help you.

Here is how you can get in touch with phone support.
 

1)Click on this link - www.hp.com/contacthp/

2)Select the product type.

3)Enter the serial number of your device or select let HP detect your product option.

4)Select the country from the drop-down.

5)You should see the HP phone support number or Chat option listed.
 

Have a nice day!