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03-28-2020 03:51 AM
When power on my All In One the message "Check video cabel" is displayed and then it power off.
Have also tried connecting an external monitor - but with same result.
03-30-2020 06:05 PM
@thorh There could be two reasons this is happening, either the resolution last selected on the device is not supported by the device and that's the reason it's not detecting the display anymore, or an update was interrupted (not intentionally but accidentally) causing the device driver to corrupt and that's why it isn't working.
The first thing to do, is attempt a BIOS recovery to resolve issues that may have occurred due to an interruption of a recent update:
Let's perform a power reset as per HP standards:
Ensure your device is OFF.
Unplug all the external devices (If any).
Disconnect the power from the computer
Press and hold the power button for about 30 seconds.
Connect the power supply
Press the power button to turn on your device and check if the issue persists.
If the issue persists, after the above steps, try the below:
To recover an earlier version of the BIOS on your computer:
Turn off the computer.
With the computer off, press and hold the Windows key and the B key at the same time.
Still pressing those keys, press and hold the Power button on the computer for 2 to 3 seconds, and then release the Power button but continue to hold the Windows and B keys until the BIOS update screen displays or you hear a beeping sound (usually 8 beeps).
If the key presses do not work, press and release the Power button, and then immediately, press the Windows and B keys at the same time, repeatedly, until the computer beeps or opens the BIOS update screen.
The power LED light remains on, and the screen remains blank for about 40 seconds before anything displays on the monitor. You might also hear beeping sounds. Eventually, an HP BIOS Update screen displays and the BIOS update begins automatically.
If the HP BIOS Update screen displays proceed to the next step.
If the HP BIOS Update screen does not display, do one of the following depending on the condition:
Computer starts into Windows: The computer starts into Windows if the power button and keys are released too soon. Repeat the previous steps, holding the power button down for 2 or 3 seconds.
Power LED light turns off: The computer turns off if the power button is pressed and held down too long. Repeat the previous steps, holding the power button down for between 2 and 3 seconds.
After repeated attempts, the HP BIOS Update screen does not open: Your computer does not support this function or it has a hardware problem that is preventing the tool from opening.
FOR DETAILS & FURTHER INSTRUCTIONS, USE THIS LINK: CLICK HERE & SKIP TO STEP 4 ONWARD
(By the end of this article all the issues should be resolved)
If the issue persists, or you need further assistance: click here for steps.
P.S: Welcome to HP Community 😉
Let me know how that pans out,
If you feel I was helpful, simply click on Accept as Solution to help the community grow,
That said, I will have someone follow-up on this to ensure you've been helped,
Just in case you don't get back to us,
have a good day, ahead.
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