My HP envy 24-n014 AIO PC is working fine until this morning, but I flashed the BIOS 19/11/22 offered by HP support on my PC. I did this as it would not recognize my 4TB external drive. The BIOS update was done without any problem. When I boot from the first boot, the Bios beeps 3 long and 4 short beeps, 5 times and the PC boot with the HP logo and the screen showing the PC details in the BIOS version.
Error: Unsupported Adapter installed. The PC automatically shuts down in a few seconds and turn off the PC.
A similar issue resolved on this site required a proprietary power adapter to fix, however, I am using the original power adapter supplied with the device.