HP AOI beeps 3 long and 4 short, 5 times, but does not boot ... - HP Support Community

BillyJ02 · ‎02-05-2023

When I leave my Pavilion AIO off for an extended time and then power up, it beeps 3 long and 4 short, 5 times. In the past it has booted up, but now it does not. The power is on, but black screen. I have removed all devices and disconnected the power supply multiple times. No luck. Any ideas?

Prométhée · ‎02-06-2023

hi

in general this corresponds to a power supply problem, sometimes this can help

Getting error unsupported adapter installed - HP Support Community - 6145827

HP Desktop PCs - Computer Does Not Start and Emits an LED or Beep Code | HP® Customer Support

The red light blinks three times, and then four, short white light blinks (3 long red, 4 short white)

This condition indicates a potential power system failure.

Reduce to minimum configuration (CPU, System board, PSU, 1 DIMM of memory), and then isolate the failed component.
Reduce further if issue persists.
Test your system with a known good PSU.
Contact HP Customer Support for further assistance to replace the component, system board, processor (CPU), or PSU if the issue persists.

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HP AOI beeps 3 long and 4 short, 5 times, but does not boot up

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The red light blinks three times, and then four, short white light blinks (3 long red, 4 short white)