HP Pavilion x360 Checksum Invalid and Battery

[WingVenom]

My laptop has been starting with the message

The CMOS checksum is invalid.  The CMOS will be reset to the default configuration and will be rebooted. Please check your BIOS Setup options to see if they change.

CMOS Reset (502)

ENTER-Reboot the system

For more information, please visit: www.hp.com\go\techcenter\startup

When the laptop finally starts up the battery is not detected.

I have tried 2 installing 2 different batteries, done the WIN+B and reinstalled the BIOS, uninstalled the battery drivers and restarted.

When I go to the BIOS setup screen there is no option to reset the BIOS.

I've tried updating the BIOS through HP device manager but there are no updates.

The only things I haven't done are replacing the CMOS battery because I cannot find it and resetting the BIOS because I don't know how to do that.

[praveen196]

@WingVenom Welcome to HP Community!

I understand that the HP Pavilion x360 Checksum Invalid and Battery.

As you have stated that you have already replaced the CMOS battery still the issue is not resolved.

I would suggest you contact our phone supports nd 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.
 

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!