Will not come on, black screen flash once when powering off

[Trinann]

Hi, it's a HP Stream 14- cb164wm. Product # 6SH07UA. The power is on but the screen is black. It flashes  a white light once when powering off. I have tried holding power button and unplugging the power cord. Please help. Thanks

[IT_WinSec]

Welcome to the HP Support Community @Trinann 

• This may be happening due to simple Windows hung, hardware problem (e.g. your eMMC storage) or
  it may be caused by recently applied faulty Windows Update, some other faulty 3rd party update/driver, corrupted bootloader / Boot Configuration Data in Windows,
  virus/malware etc....
• Have you performed any changes, updates or something before ? Do you connect this issue to something that has happened earlier ?

1. Try hard restart/hard reset.

Press the power on-button on your PC and hold it for about 5-10 seconds until your computer powers off completely.

Remove and unplug any external peripherals and accessories.

Press once the power-on button to turn on the PC and wait if it will start now. Wait...

If it still fails to load properly, go ahead with the next steps

2. Perform some basic hardware checks to rule out a potential hardware problem

- Please, shutdown the computer using the power button (pressed and hold for a few seconds until PC powers off)

- Power the computer back on.

As soon as you press the power-on button, immediately begin hitting the Esc button (like tap-tap-tap) before any logo appears. This should open a HP Startup Menu

- Choose F2 to open System Diagnostics. Follow the on-screen instructions to perform System Test >> Quick test.

This will check major hardware components for issue (do it just in case) . Here is more info >> https://www.youtube.com/watch?v=6JXUp43ahHA

If there are no system checks/no quick tests, perform storage drive test and RAM check (memory check).

Let me know the test results. If the tests pass without issues, continue. If not, please, let me know

3. Repeat steps 1-2 above but when HP Startup menu opens, please choose F11 for System Recovery options.

The computer should boot from it's recovery partition to open you various recovery options. Note, that F11 option will only work if the recovery partition is there (not deleted) and intact. From there, you have plenty of options to choose from. Every HP computer comes with recovery partition present to assist in tough moments.

Please, perform "System Restore" first in an attempt to fix the issue. Please, restore back to previous days (restore point) where the issue was not present. Here is more info:

>> http://support.hp.com/us-en/document/c03327545#AbT5

>> https://www.tenforums.com/tutorials/4588-system-restore-windows-10-a.html

Hope this helps. Let me know how it goes. Provide your feedback/reply.

[Trinann]

Thanks for the advice. I guess the screen is broken because I'm getting nothing on my screen.

[IT_WinSec]

Hello @Trinann 

You can test if the screen is broken by using an external monitor and VGA cable - here are 2 HP articles:

>> https://support.hp.com/lt-en/document/c03518165

>> https://support.hp.com/lt-en/document/c03504591

But, please clarify - the screen is completely dark/black like the PC is not ON

or

the PC screen is blank but not completely dark, like it's on but just there is no picture there

Try this

• Please, shutdown the computer using the power button (pressed and hold it for a few seconds until PC powers off completely)
• Press once the power-on button to start the computer back on and...
• As soon as you press the power-on button, immediately begin hitting the Esc button repeatedly (like tap-tap-tap) before any logo appears. This should open a HP Startup Menu.
• Here is a video example >> https://www.youtube.com/watch?v=GSN0qzXayUY

Let me know how it goes