A7V400-MX motherboard

[BORIS BELCHOFF]

New install- without any devices attached to this board, except built in
vidio & sound. as soon as power is turned on it starts to boot then stops
and starts again, then it post ok. I have flashed the bios, cleared cmos,
changed memory and power supply, it still does this, When I turn it off , I
hold the power switch in till it stops running so it should be off, however
it is still in the sleep mode, I even repaced the board, it does the same
thing.. It does this with only the power button attached, I checked to make
sure it is attached to the board to the correct pins, I am stumped. any
helpwill be greatly appreciated. I have a hard time believing I have two
boards defective, I think something else is wrong.

(e-mail address removed)

 

[Brad Clarke]

That is normal for this board, as well as several other Asus boards.

I have two A7V400-MX boards, and they also do this.

They only do this from a "cold" start. If you do a normal shutdown (the
boards go into standby mode) and then start the PC, it will start
normally without stuttering.

If you do a shutdown and unplug the power cord from the power supply,
reconnect the power cord, and turn on the PC, it will do the stuttering
startup thing.

Brad

 

[JK]

New install- without any devices attached to this board, except built in
vidio & sound. as soon as power is turned on it starts to boot then stops
and starts again, then it post ok. I have flashed the bios, cleared cmos,
changed memory and power supply, it still does this, When I turn it off , I
hold the power switch in till it stops running so it should be off, however
it is still in the sleep mode, I even repaced the board, it does the same
thing.. It does this with only the power button attached, I checked to make
sure it is attached to the board to the correct pins, I am stumped. any
helpwill be greatly appreciated. I have a hard time believing I have two
boards defective, I think something else is wrong.

If you are one of them that before going to sleep switch off
completely power on all standby devices, - then you have a problem
with every ATX power supply. They all behave as you describe.

The standby power for a soft-shutdown atx power supply is just a few
watt.
But the ATX power supply offer some advantages:

- suspend to ram
- power-on by touching any key or mouse
- etc. other wake-up functions

best regards

John

 

[Boris Belchoff]

Thanks for the information
Boris

If you are one of them that before going to sleep switch off
completely power on all standby devices, - then you have a problem
with every ATX power supply. They all behave as you describe.

The standby power for a soft-shutdown atx power supply is just a few
watt.
But the ATX power supply offer some advantages:

- suspend to ram
- power-on by touching any key or mouse
- etc. other wake-up functions

best regards

John