Blank Screen and beeps

[cjt0027]

After powering on our laptop and after about 30 secs, we get beeps and the caps lock flashing twice. Nothing appears on screen.

I've worked through the various posts about CMOS battery and BIOS issues but can't seem to resolve it. Firstly, where is the CMOS battery on these devices (X360 13-a052na) and secondly, the special key sequence for restoring/resetting the BIOS doesn't show anything on screen.

Any help would be appreciated.

[A4Apollo]

Hey there! @cjt0027, Thanks for stopping by the HP Support Forums!

I understand your PC boots into a black screen and light on caps lock blinks 2 times repeatedly.

Don't worry I'll try to help you out.

Did you make any software or hardware changes on your laptop?

Please provide the product number of your PC to assist you better.

As you mentioned the light on caps lock is blinking 2 times repeatedly.

It looks to be a problem with BIOS on your PC has got corrupted. 

Try recovering the BIOS on your PC and check if it helps.

Please try the steps recommended below.

Turn off the notebook.
Plug the notebook into a power source using the power adapter.
With the notebook off, press and hold the Windows logo key and the B key at the same time.
   NOTE:
On some notebook models, it might be necessary to press and hold the Windows logo key and the V key.
While pressing those keys, press and hold the Power button on the computer for 2 to 3 seconds, and then release the Power button but continue to hold the Windows logo key and the B or V key until the HP BIOS update screen displays or you hear a beeping sound (usually 8 beeps).
The HP BIOS Update screen displays and the BIOS update begins automatically. This might take several minutes, and you might hear additional beeping sounds.
If the HP BIOS Update screen does not display, repeat the previous steps. If the issue persists after repeating the steps, skip to the next step to Download a replacement BIOS file.
If the Power light turns off, the notebook has turned off because the Power button was held too long. Repeat the previous steps, making sure to hold the Power button for 2 to 3 seconds only.
If your notebook starts Windows, update the BIOS to the latest version using the standard BIOS update procedure. For more information about updating your notebook BIOS, go to Updating the BIOS (Notebooks).
Click Continue Startup to prompt the notebook to restart immediately, or allow the notebook to restart automatically when the timer reaches zero.
After the notebook restarts, press Enter to continue.
   NOTE:
If the notebook repeatedly displays a message that the BIOS has been recovered, go to HP BIOS Application Selected is Corrupt or Missing for troubleshooting steps.
After Windows starts, if a message displays stating that the notebook was improperly shut down or that a boot problem was detected, follow the on-screen instructions.
You can now to enter the BIOS menu or start the Windows operating system.

Refer this article to know more information about recovering BIOS.

Also, refer this article to know more about blink codes on your PC.

Let me know if this works!

I hope you have a great day! 🙂

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!

[cjt0027]

There have been no recent software updates installed.

The model is 13-a052na.

Unfortunately, the key sequences do not show any BIOS restore/update screen. Tried both Win Key + B and Win Key + V but nothing appears on the screen.

Any other suggestions to help get this resolved?

[Chimney_83]

Thanks for the reply and trying the suggested steps, the issue you are facing, seems to be a hardware issue, recommend you contact our phone support to check for the service options available for your computer. 

Keep me posted.