PC SCREEN BLACK

[Victor80001]

Greetings

I have a problem with my HP PC Windows 7.It suddenly stopped working.When I turn it on the screen remains black and the keyboard does not light up also,only a mouse lights up.

What could be a cause of this if I may ask.

Will be waiting to hear from you

Regards

Victor

[Pallipurath]

Hi @Victor80001

Welcome to the HP Support Community.

Thank you for posting your query.

i understand that your HP PC is not starting up and displaying a black screen, it's possible that there may be an issue with the BIOS or motherboard. 

Here are detailed troubleshooting steps you can follow:

Perform a Hard Reset:

• Turn off the computer.
• Disconnect all external devices.
• Unplug the power cord from the computer.
• Press and hold the power button for about 15 seconds.
• Reconnect the power cord and try to start the computer again.

Check the Power Supply:

• Ensure the power outlet is functional.
• Make sure the power cable and adapter are correctly connected and functioning.
• For desktop PCs, ensure the power supply switch at the back is turned on.

Inspect the Monitor:

• Verify that the monitor is turned on and set to the correct input.
• Check the monitor’s brightness and contrast settings.
• Confirm that the video cable is securely connected to both the PC and the monitor.

Reset the BIOS:

• Turn off the computer and unplug the power supply.
• Open the case and locate the BIOS reset jumper on the motherboard ("Clear CMOS" or "CLRTC" jumper).
• Move the jumper from the default position to the reset position for about 5-10 seconds, then move it back.
• Alternatively, remove the CMOS battery for approximately 5 minutes and then reinsert it.
• Close the case, reconnect the power supply, and power on the computer.

Verify Internal Connections:

• Open the case and check that all components are properly seated, including RAM, GPU, and power cables.
• Reseat memory modules and expansion cards to ensure they are securely attached.

Test with Minimal Hardware:

• Remove all non-essential components.
• Leave only the CPU, one stick of RAM, and integrated graphics connected.
• See if the PC posts and boots normally.

Check for POST Codes and Error Beeps:

• Listen for any error beeps when turning on the computer. Refer to your motherboard's manual for beep code explanations.
• Observe any LED lights that may indicate hardware faults.

Update or Restore BIOS Firmware:

• If you can access BIOS, check for any firmware updates.
• Consider restoring the BIOS to default settings if anything was recently changed.

Hope this helps, Please revert if the issue persists.

Take care and have an amazing day!