Loud power supply fan on startup then 4 beeps with 2 second pause with another 4 beeps

[Ebyn]

So when I start my elite desk 800g1 the power supply fan starts up loud then shuts off immediately then go's to a 4 beep with a 2 second pause sequence, I am needing to know if i need to replace the power supply so please answer, and thanks for your time.

[Prométhée]

hi

check this

HP EliteDesk 800 G1 Tower HP EliteDesk 800 G1 Small Form Factor HP EliteDesk 800 G1 Ultra-Slim Deskt...

Interpreting POST diagnostic front panel LEDs and
audible codes
This section covers the front panel LED codes as well as the audible codes that may occur before or
during POST that do not necessarily have an error code or text message associated with them.
WARNING! When the computer is plugged into an AC power source, voltage is always applied to
the system board. To reduce the risk of personal injury from electrical shock and/or hot surfaces, be
sure to disconnect the power cord from the wall outlet and allow the internal system components to cool
before touching

this ?

Red Power LED flashes four times, once every second,followed by a two second pause.

Beeps stop after fifth iteration but LEDs continue until problem is solved.
4

Power failure (power supply is overloaded).
OR
The incorrect external power supply adapter is being used on the USDT.

1. Open the hood and ensure the 4 or 6-wire power supply cable is seated into the connector on the system board.
2. Check if a device is causing the problem by removing ALL attached devices (such as hard, diskette, or optical drives, and
expansion cards).

Power on the system. If the system enters the POST, then power off and replace one device at a time and repeat
this procedure until failure occurs.

Replace the device that is causing the failure.
Continue adding devices one at a time to ensure all devices are functioning properly.
3. Replace the power supply.
4. Replace the system board.
OR
The USDT power supply adapter must be at 135W and use the Smart ID technology before the system will power up.

Replace the power supply adapter with the HP-supplied USDT power supply adapter