black screen with the wifi button light blinking

[Yukx99]

how to fix black screen with the Wifi button blinking light on start up. the beep is a long and short intervals

[A4Apollo]

Hi! @Yukx99,  Thanks for stopping by the HP Support Forums!

I understand when you turn on your PC you see a black screen and the wireless light is blinking.

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

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

Are you able to boot into BIOS on your PC?

Have you tried checking with a different adapter on your PC?

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

As you mentioned when you turn on your PC you see a black screen and the wireless light is blinking.

Try few steps recommended below.

To perform a power reset on a laptop with a removable battery, use the following steps:
Turn off the computer.
Remove the computer from any port replicator or docking station.
Disconnect all external connected peripheral devices such as USB storage devices, external displays, and printers.
Unplug the AC adapter from the computer.
Remove the battery from the battery compartment.
With the battery and power cord unplugged, press and hold the Power button for about 15 seconds to drain any residual electrical charge from the capacitors.
Insert the battery and plug the AC adapter back into the laptop, but do not connect any of the peripheral devices.
Press the Power button to turn on the computer.
The computer starts normally or a startup menu opens.
   NOTE:
If your computer does not start after pressing the Power button, then a power reset did not solved the startup issue. See Additional resources for further troubleshooting steps.
If a startup menu opens, use the arrow keys to select Start Windows Normally, and then press the Enter key.
After Windows opens, reconnect each peripheral device that was disconnected, one device at a time, until all devices are reconnected.
Your laptop has been reset. After a power reset, it is a good idea to run Windows Update and HP Support Assistant to update all device drivers. See Updating Drivers and Software with Windows Update (Windows 10, 😎 and Using HP Support Assistant (Windows 10, 8, 7) for more information.

If you are able to boot into BIOS, try restoring the BIOS to default and check if it helps.

Turn on your PC keep tapping the F10 key, you will boot into BIOS.

From the main or file menu select restore defaults.

Select F10 to save changes and exit.

Also, if you are able to boot into F2 try running a system diagnostics test on your PC and check if the hardware components on your PC are functioning correctly.

Refer this article to know more information about running system diagnostics on your PC.

Refer this article to know more information about blink or beep codes on your PC. Link 

Refer this article to further troubleshoot no boot issues with your PC.

If the solution provided worked for you, please mark accepted solution for this post.

Let me know if this works!

Have a wonderful day ahead! 🙂

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