My hp x360 doesn't power up and flashes every 5 seconds

[Littlesoldier]

Can anyone help. 

The screen on my hp x3600 locked up. Closed the lid and connected the charger. 

The laptop now doesn't power up and all that happenes is the power on switch flashes Once every 5 seconds. I've gone through the reset process. 

[PiterGeek]

You can try some troubleshooting steps that may help.

- Hard reboot, remove the battery and unplug the AC adapter then press and hold the power button for 20 seconds then try booting it up again.

- If a hard boot is not working, do test the AC adapter if it's working properly. Remove the battery and power the laptop with just the AC adapter connected and see if it will boot up or not. do also try a different AC adapter that has the same voltage and see if it will work or not.

- Proceed with reseating the RAM's if trying a different AC adapter will not work, remove them all for couple of seconds then put them back in making sure everything is seated properly.

- If it will still not work, connect an external monitor and see if you'll get any display from it. If there's a display on the external monitor that could mean that the problem is the built in display.

- Otherwise this could be a sign the motherboard has failed.

[Alfie8]

How do I remove the battery??

[PiterGeek]

https://support.hp.com/us-en/document/c04163019