Parni wrote on 2020-05-02, 20:17:
I found this thread: https://www.experts-exchange.com/questions/10 … rd-problem.html
It reads: "I can't find the manual, but I know that there is only a few certain memory configurations the motherboard can take."
Again I'm starting to wonder could this be just a memory configuration issue, could someone explain what are the "single" and "double" bank memory mentioned in this manual: http://www.elhvb.com/mboards/qdi/895p3s5.pdf
OK, so you tried already non sl mode, too. That was worth a try definitely.
And I agree, don't worry about memory now. Nevertheless I would test with the absolute minimum to get a picture on the screen:
so graphics card, a single memory module (bank 0) and cpu.
OK as a last try, please remove also all 9 cache srams, maybe they are shortening something. Unlikely, but there were already cases, where bad srams spoiled the boot process.
If that does not help either, next step would be a post card, I agree.
OK the bios could be empty, too, but that's not very likely. But OK, if you have a second 486 mainboard you could put the bios in from that, if it is socketed (even if completely different chipset and so on). Of course without bios nothing happens, also no beeping 😀 But I don't think it's the problem here.
Most probably the board has multiple defects.