386SX wrote:I am testing the pci bus. I try to change the supply but I am sure they are good ones. I don't see anything strange on the motherboard I still think this board is not broken.. 🙁
It's certainly showing signs of life, since the POST process does get somewhere before it hangs up. It's not just sitting at "00" like a completely dead board would.
Just to be clear, I'm not saying the PSU should be replaced, I'm just suggesting to measure the voltages if you have the means to do so. Knowing the voltages is more convincing than swapping the PSU. It wouldn't even have to be a PSU problem - there could be a fault on the board that would manifest as low voltage somewhere.
If you try the PCI POST card on another working motherboard, that would give you a reference of what you should expect all the LEDs to look like on a good board. Then you'll know if anything on the POST card is abnormal when it's on the P5A.
I know you said you experimented with the jumpers, but make really sure that all the bus dividers and voltage settings etc are correct. From what I read, that board has a ton of jumpers.
Does your POST card by chance have any way to show you the PCI clock frequency? If so, that would help confirm for sure that it's correct. Mine does this, but unfortunately the feature is glitchy.
Try holding <DEL> on the keyboard before and during starting up the machine. I've had that "fix" a non-POSTing Asus before.
With ISA video card and nothing elsa, just the board and the supply, both fan attached cpu and chassis run ok. With a speaker it give me NO SOUND during fan running, monitor seems to wake up but no text or signal. Strange I tried different ram and with a couple of probably not compatible simm it give me finally at least a continuous beep 1 second after the other. It seems to be RAM problem in the Award code so I'm again without a solution.
This part is interesting. The fact that it doesn't normally beep, but is capable of beeping if you remove the memory, makes it seem as though the BIOS thinks it has successfully booted. That it wakes up the monitor reinforces this further.
Have you tried any PCI video cards? Maybe the ISA card doesn't work properly with that board for whatever reason. And there's always the question of clean contacts.
Also, are you sure the card(s) that you're using are able to work with your current monitor? If it's an LCD, I'd be suspicious of that. LCDs don't get along with some of the old CRT-era cards.