Only power power button blinking

[dante2]

Tomorrow i turned the the laptop on for some time it worked after then the screen goes white and blue and shutdown . Afftetr then i tried to  turn the pc on but it didn't. Only light is blinking on power button .after 3-4 Hours it did start and worked properly but today this repeated again. 

[Echo_Lake]

@dante2
Thank you for posting on the HP Support Community.

• Did this happen after a recent window or software update?
• Have you made any hardware/software changes?

While you respond to that, let's try these steps: 

Hard Reset: Follow steps from the link: https://hp.care/2GnkMa8. (If the computer boots up normally then continue the next step)

BIOS default: 

1. Turn off the computer and wait five seconds.
2. Press the Power button to start the computer and repeatedly press the F10 key to enter the BIOS setup menu.
3. On the BIOS Setup screen, press F9 to select and load the BIOS Setup Default settings.
4. Press F10 to Save and Exit.
5. Use the arrow keys to select Yes, then press Enter when asked Exit Saving Changes?
6. Follow the prompts to restart your computer.

Hope this helps! Keep me posted for further assistance.
Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.

[asmita6658]

Hi @dante2

Try these steps -

1) Shutdown the computer. 
2) Hold down the Windows and B button together while the computer is still turned off. 
3) Turn on the computer and continue to hold the Windows and B button until a BIOS Recovery screen appears. 
4) Follow on-screen instructions and click on OK
 

If the issue still persists, perform the hardware diagnostics -

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. When the menu appears, press the F2 key.
3) On the HP PC Hardware Diagnostics (UEFI) main menu, click System Tests. Click Extensive Test.

Keep me posted. 

[dante2]

Yes i tried all that but it does't work because of black screen 

[dante2]

And theirs two slow and two fast blinks on capslock .

[dante2]

All i have is black screen and capslock with two slow blink and to fast blinks .

[asmita6658]

Hi @dante2

Appreciate you trying the steps. This looks like a hardware issue. Please reach out to the HP Support in your region regarding the service options for your computer.

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!