Black screen after sleep mode

[Saher_waqas]

Hi, my window is not opening after I sleep laptop for my urgent work but after that it still not working.when I press power button it sounds a long beep but not fan working sound in my laptop.

[Pallipurath]

Hi @Saher_waqas 

Welcome to the HP Support Community.

Thank you for posting your query.

I understand that the laptop does not resume from sleep mode, and pressing the power button results in a long beep with no fan activity. This behavior may indicate a hardware initialization issue or that the system is not waking properly from sleep. To further assist you I would request you to please share me the Product number, Meanwhile, I would request you to please follow the steps:

Power Cycle the Notebook:

• Press and hold the power button until the laptop turns off.
• Disconnect all cables, including the power adapter.
• If your laptop has a removable battery, slide the battery release latch and remove the battery.
• Press and hold the power button for 15 seconds.
• Reconnect the power adapter to the laptop and a wall outlet, but do not reinstall the battery if you previously removed it.
• Press the power button to turn the laptop on.

Connect an External Monitor:

• Use a DisplayPort or HDMI cable to connect the notebook to an external monitor.
• Connect AC power to both the notebook and the external monitor.
• Turn on the external monitor and see if it displays an image. If it does, the notebook’s internal display might need repair.

If the screen remains black on both the notebook and the external monitor, there could be a startup issue, and further diagnostics may be needed.

For more detailed troubleshooting steps:

HP Notebook and All-in-One PCs - Troubleshooting screen issues (Windows 11, 10)
How to Fix a Black Screen

Take care and have an amazing day!