3.4 beeps in all in one business pc

[usam]

The system board displays a power failure (crowbar).* 3.4 beeps.replaced the new motherboard still facing same issue.same issue found in 6 nos pall in one pc

[Lil_Boy_Blue]

Hi

Just to be sure...

You get a LONG (MAJOR) signal category, RED LED &

then a SHORT (MINOR) signal category, WHITE LED.

Major – the category of the error; Minor – specific error in that category

The AUDIBLE repeats 5 times, and the VISUAL until power is removed.

Hardware

3.4

The Main-Board displays a power failure (crowbar).* Indicates potential power system failure.

1 Reduce to minimum config (CPU, Main-Board, PSU, Single memory DIMM) and isolate failed component. 2 Reduce further if issue persists. 3 Test known good PSU. 4 Replace affected component. 5 If unable to confirm source, replace CPU, Main-Board, PSU.

So you eliminated the PSU and CPU? The memory module also passed?