replace cmos battery

[reinoudjan]

My computer don't start up. I removed the battery and placed it back. The computer  is charging (orange light)

The caplocks blinks: 5 long- 3short.

Has this computer a cmos battery?

[Paul_Tikkanen]

Your notebook does not have a CMOS battery.

The main battery also serves as the CMOS battery which maintains the BIOS and system clock settings.

Below is the link to the service manual:

Maintenance and Service Guide OMEN by HP 17 Laptop PC

Chapter 3 has the list of parts.

You will find no CMOS/RTC battery part number.

Chapter 6 has the component removal and replacement procedure.

You will not find a procedure to remove a CMOS/RTC battery.

According to the troubleshooting guide at the link below, your notebook may have a BIOS issue.

HP Notebook PCs - Computer beeps or a light blinks during startup | HP® Support

You may want to try making a USB BIOS recovery drive with the latest BIOS update from the link below, and attempt to recover the BIOS.

OMEN by HP 17-cb0600nd Software and Driver Details

Watch these videos for how to create and use a BIOS recovery flash drive with the above exe file using another Windows PC:

How to make and use the BIOS recovery flash drive to recover or update the BIOS outside of Windows.

Creating a BIOS Recovery Flash Drive for HP Notebooks | HP Notebooks | HP Support

How to recover/update your notebook's BIOS with the USB recovery drive and try to recover the BIOS.

Restore the BIOS with a Recovery Flash Drive on HP Notebooks | HP Notebooks | HP Support