Black Screen with blinking Caps Lock

[ChetanBabaJi]

• My HP Pavilion x360-14 cd0077tu has a black screen with caps lock flashing and fans making sound . The display is off all the time. I remember it was having some bios recovery the same day this happened. I did the WIN+B shortcut function as well as the usb flash drive method . The USB is a bit old so that might be the issue but do you have any other solution?

[Rainbow23]

Hi @ChetanBabaJi,
Welcome to HP Support Community. This is a great place to post questions and find answers.
Thank you for posting your query, I will be glad to help you.

I see that you are getting black screen with caps lock flashing and fan is also making loud sound.

You may download and install the latest version of the HP Hardware Diagnostics from the website: https://support.hp.com/in-en/help/hp-pc-hardware-diagnostics

Run an extensive system test by following the steps listed below:
1. Hold the power button for at least five seconds to turn off the computer.
2. Turn on the computer and immediately press Esc repeatedly, about once every second. 
3. When the menu appears, press the F2 key.
4. From the main menu, click System Test and then click on Extensive Test.
5. Click Run once.
You may also refer to this document: https://support.hp.com/lt-en/document/c03467259

Let me know if this helps.
Take care and have a good day.

Please click “Accepted 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!
 

[ChetanBabaJi · Accepted solution]

Thanks for your support but I showed my laptop to a official technician . My cause was that my windows was corrupt. Thanks again.

[Rainbow23]

@ChetanBabaJi,

You are welcome.

Do keep us posted if you need help in the future and we will always be there to help you.

Take care and have a good day!