My displays are black screen when pc starts

[Biffen]

Hello my PC when started does not show up on my displays (have confirmed it is the pc and not the displays). The pc I have is an omen 25L series GT15. 

[Hawks_Eye]

Hi @Biffen 

Welcome to the HP Support Community!

Thanks for posting your query! We're here to help you get back up and running.

A black screen on startup with an Omen 25L GT15 often points to GPU failure, BIOS corruption, or power delivery problems.

Please try the below troubleshooting steps:

 

Check Display Connections

• Ensure the HDMI/DisplayPort cables are securely connected.
• Try a different cable or port on the GPU.

Perform a Hard Reset

• Turn off the PC and unplug it.
• Hold the power button for 30 seconds to drain residual power.
• Reconnect and power it on.

Try Windows + B Key Combo

• Press Windows + B while turning on the PC.
• This forces a BIOS recovery if the firmware is corrupted.

Reseat RAM & GPU

• Open the case and reseat the RAM sticks one at a time.
• If possible, remove and reinstall the GPU.

Check for Beep Codes

• If the PC emits beeps, they indicate hardware errors.
• Let me know the beep pattern, and I can help interpret it.

Test with an External Monitor

• If available, connect to a different monitor or TV to rule out display detection issues.

Reset CMOS (BIOS Settings)

• Remove the CMOS battery for five minutes, then reinstall it.
• This resets BIOS settings and can resolve boot issues.

If none of these steps resolve the issue, the problem might be GPU failure or motherboard-related. 

Let me know what happens, and I’ll guide you further!

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