Asus Rog Strix B450-f Gaming Amd Ryzen

[elmundodeferk]

Hi there! I am writing to you from Argentina! Help here !!! I have an AM4 - Asus Rog Strix B450-F GAMING II with 4 gpu RX570 8gb. With a GPU everything is fine. When I add the other 3 the mother does not work. Take everything out, try 2 and the same does not start. I already put everything in Gen2 and gen1. Test GPUs with raisers and onboard. I flashed the bios, tried different slots and nothing ... there is no way. Now I get a video error, I see vertical stripes, when testing with 2 but the motherboard does not start. Several tell me that it is a bios configuration issue but what I tried did not work for me. what dou you recommend?

[2021Start]

Hello everyone.
I have 2* 3090 running on riser, when i want to add the 3d one i have à Black screen when powering and no signal is détected on the screen. I need do a cmos and run 2 only cards.
I use à AMD athlon 3000g as processor ( very low watt consumption)
Any one have an idea of what is going on ? How can you guys run more then 2 gpu on this motherboard ?