Change the CMOS battery 😀

If the board has a built-in speaker, do you get beeps when you remove the RAM? Do you have a spare PSU to try? Perhaps the board needs a discharge & new battery.

Guess: Bad cap, bad PSU or BIOS issue. Have you tried a different PSU? I would strip down to basics and use a good PCI vid card and good PSU that I know work with good (that Trust Powermaster only had a 2 year warranty, where many good PSU back then had 5+)

slivercr wrote on 2020-06-23, 23:00:

Change the CMOS battery 😀

I've already done that, no effect.

Horun wrote on 2020-06-24, 01:56:

Guess: Bad cap, bad PSU or BIOS issue. Have you tried a different PSU? I would strip down to basics and use a good PCI vid card and good PSU that I know work with good (that Trust Powermaster only had a 2 year warranty, where many good PSU back then had 5+)

Both mainboards are refurbished & the same models but with different rev. numbers (1.01 & 5.00) and the results are the same. At first I thought there was an incompatibility issue with the CPU, but according to support list it should be supported.

alienmannequin wrote on 2020-06-23, 23:01:

If the board has a built-in speaker, do you get beeps when you remove the RAM? Do you have a spare PSU to try? Perhaps the board needs a discharge & new battery.

There aren't any beeps coming out whatsoever, regardless if I remove graphics card, RAM,... . Can't even enter BIOS 'cause there's no display + mouse & keyboard aren't working or detected, regardless if it's on USB or PS2. At first I thought there was some incompatibility with the testbench, but I think I should at least get a display running or something....

Remove everything (even the testbench) except PSU, mainboard, CPU and speaker. You should get some beeps. If possible, try using another CPU and see if the issue persists. I've had early Durons die on me without corner damage.

A POST card would be appropiate in these situations.

Still waiting for POST cards to arrive, but I'm rulling out everything except motherboard & CPU; so with that in mind, what motherboard would be recommended? Let's say for a CPU around 1.00 - 1.40 GHz, with AGP 2x slot (Voodoo 3 3000) & ISA slot (SB Pro 2). I would prefer AMD, but I could do with INTEL.

I really love my Abit KT7A-raid it's a super stable and fast board.

Post good quality pictures of the board.
Scrappers and postal workers throw these things around all the time so most of them are scratched up and have broken traces.

Here are the screenshots of both motherboards; same models, different rev. numbers. The one with CPU & RAM installed is rev. 5.0, the other one is rev. 1.01.

Finally got my POST card and here are the results (and they're the same on both motherboards).

Still no success. Tested 3 processors (Duron 950, Duron 1.2 & Duron 1.3) on 4 diff. motherboards (GA-7ZX (rev. 1.01) , GA-7ZX (rev. 5.00) & 2x GA-7IXE4 (rev. 1.00)), with 2x 128 or 2x 256 SDRAM still no POST, perhaps just once in approx. 60 boot ups & that's it. Used a bit older PSU as provided in the picture & a bit newer one from Chieftec (750w), still the same. I figured if there would be anything wrong with graphics card (3dfx voodoo3 3000) or even CPU or something, I'd get some damn beep from the speaker, but nothing; monitor just keeps blinking.

I've tested with a motherboard that I borrowed; graphics card, sound card, RAM & PSU work fine. Guess it's now down to CPU & motherboard. Someone has mentioned that I have to check about multiplyer & fsb speed settings, but I can't find any jumpers, only FSB switch which is already set to 100 MHz as listed for those Durons 😳