I left my laptop on and when my laptop got drained out of battery than i charged it but the laptop

[Nihal23]

I left my laptop on and when its battery got drained out i charged it and as i on it it's getting power fan is working i can hear the sound screen is getting power to but the screen is not working it's black totally caps lock not blinking, lst time also same but that time bios was fail to update so update it but this time no function is working from keyboard win+B nothing please help me team HP

[Hawks_Eye]

Hi @Nihal23 

Welcome to the HP Support Community! We're here to help you get back up and running.

I understand how worrying it feels when your laptop powers on with fans and lights but the screen stays completely black. You’ve already tried the Win+B recovery and a BIOS update in the past, so I appreciate the effort you’ve put in. 

Let’s go through a structured set of steps to bring the display back.

Step‑by‑step actions

1. Power reset

• Disconnect the power adapter.
• Hold down the power button for 15 seconds to drain residual charge.
• Reconnect the adapter and try powering on again.

2. External display test

• Connect the laptop to an external monitor or TV using HDMI.
• Power on the laptop and press Fn + F4 (or the display toggle key on your model).
• If the external screen shows output, the issue is with the laptop’s internal display or connection.

3. Hard reset with battery removal (if removable)

• If your model has a removable battery, take it out.
• Hold the power button for 15 seconds.
• Reinsert the battery, connect the adapter, and power on.

4. Reseat memory modules

• Power off and disconnect the adapter.
• Open the memory compartment and carefully remove the RAM sticks.
• Reseat them firmly back into place.
• This clears potential contact issues that can cause black screen at startup.

5. BIOS recovery attempt

• With the laptop off, hold Windows + B and press the power button once.
• Keep holding the keys for 5–10 seconds.
• If the BIOS recovery screen appears, follow the prompts.
• If nothing shows, proceed to the next step.

6. Run hardware diagnostics

• Power on and immediately press F2 repeatedly.
• If the diagnostics screen appears, run the extensive test for memory and storage.
• This helps confirm if hardware is functioning.

Since the fans and lights are working, the system is powering but not completing display initialization. By performing a power reset, testing with an external monitor, reseating memory, and attempting BIOS recovery, you can isolate whether the issue is with the display, memory, or BIOS.

If my response helped, please mark it as an Accepted Solution! ✅ It helps others and spreads support. 💙 Also, tapping "Yes" on "Was this reply helpful?" makes a big difference! Thanks! 😊

Take care, and have an amazing day!

Regards, 

Hawks_Eye