Asus B250 Mining Expert boot issue 1207

[valjean]

Hello everyone, I am having a big problem with my Asus B250 Mining Expert MotherBoard.

I used to have it running with 8 RX 570 and Hiveos and it worked pretty well except when I wanted to change algo

Then the load of the motherboard (LA) rised and the cards were hashing very low (or the rig was not responding at all and was going offline). Same issue happened sometime when I was changing my overclocking profil.

I decided to flash my Bios with the latest version (1207 instead of 1001) to solve this problem and instead....ended with a much bigger problem.

I now can't start my rig at all. I get from the motherboard a long bip and 3 short bips and nothing on the screen.

If I am right theses bips means that my motherboard doesn't detect any graphic cards.


From what I remember I had the same issue when I first bought the motherboard and I was able to solved it by plugging an oldschool RX 7950 (After that the motherboard dectected all my RX570)

Did you had a similar issue ? Or have you a solution ?


Here is what I have tested so far:

1) Unpluging all graphics cards, and Pluging only one card with riser on the x16 port

2) Unpluging my second power supply

3) Pluging one card directly on the motherboard (with bios mod and with original rom)

4) clear CMOS

I which I still had my Rx 7950 to do the test but I solded it...

Any advice are welcome 

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[Johny101010]

Plug the monitor straight to the MoBo and see what happens. Also re seat your memory and CPU.

[valjean]

Thank you Johny101010 for your advises. I was able to solve it by putting an old Radeon 6850 on the 16 slot and then all my cards where detected.

At first after this my load average (LA) rised a lot but after a couple of restarts it seems to run much better...

[BitcoinBlaster51]

Ever tried a newer processor which can support more PCIe lanes?