B550 pro4 support

I tryed other display port and HDMI cable, other monitor, tryed without any cable connected. Not worked.

Talisman_Chick wrote: OK, but Asrock B550M Pro4 has only 1 PCI-e x16 Gen4, 1 PCI-e x1 Gen3 and 1 PCI-e x4 Gen3.

If you put your card into pcie slot number 3 on your motherboard, it should in theory work at either x16 or x8 at least.
PCIe slot 3 works at x4 speeds only when PCIe slot 1 has GPU as well working at full x16 speed.
Doesn't hurt to try to see if card works in that slot ;)

If all else fails, last reset would be to reset the BIOS and then add the card to primary slot.
Also, do you have other display port or HDMI cable to try out. I know I'm grasping for straws here, but you never know ;)

Talisman_Chick wrote: muziqaz wrote: Card works in any PCIe gen slots. They work, but slower than they could.

No, you will not feel any speed difference on your 5700xt even on pcie3 x8 speed ;)
I have my Radeon 7, which is faster than 5700xt in pcie3 x8 slot, and 5700xt itself is in secondary pci-e slot, and have no issues with performance :)

Talisman_Chick wrote: I tried to reduce the memory frequency to 2133 MHz, I tried all video outputs. Did not help. Other PCI-e ports cannot work in Gen4 mode. But I'll check it anyway.

Card works in any PCIe gen slots. It does not need to be Gen4 :)

First, drop memory speed to minimum default, then try. If not, try different PCi-e slot, if not, try different display port slot on card, or HDMI