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I1 month old HP Envy x360 Convertible Laptop will not boot. LED on Caps Lock 5:3

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Envy x360 convertible laptop
Microsoft Windows 10 (64-bit)

1 month old ENVY x360 laptop will not boot - black screen - LEDs on caps lock key: 5 long + 3 short = system board /BIOS problem. Battery not removable. Working fine until yesterday. All software up to date.  Internet connection: wireless with VPN. How do I fix it?

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@Dainian, Welcome to the HP Support Community!


I understand that you have an HP Envy x360 Convertible. I read that you had opened the laptop for cleaning purposes and tried to power it on without the fans connected. The laptop powered on then. But after connecting the fans, the laptop does not power on. Not worry, I'll do my best to help you. 


Do you see a light at the place where the charger connects to the laptop? If yes then it indicates that the charger is all fine.


I recommend you to perform the following steps to isolate the issue and arrive at a fix: 

  • Remove the battery out. If the battery is integrated and does not have a latch to release it then leave the battery inside the laptop.
  • Disconnected AC adapter from the laptop.
  • Press and hold the power button for 15 seconds.
  • Reconnect the battery and plug the AC adapter.
  • Power ON the laptop.


If the laptop does not power on then please continue with the below steps:

  • Disconnect the charger and remove the battery out.
  • Connect only the battery and check if the laptop powers on.
  • Likewise, remove the battery out and connect only the charger and check if that helps.


Also, when there are no nighs on the laptop powering on, you may open the laptop again to check if all the cables and connected properly and there are no misses. You may refer to this detailed service guide of your laptop. 


Hope this helps! Keep me posted. 


Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.

Click the “Kudos, Thumbs Up" on the bottom right to say “Thanks” for helping!

Have a great day! 

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