Hello there,
So the story is the below. My Sapphire AMD RX6700 Pulse 10GB burned one of the 2 fans so I send it back for RMA.
After some days the shop exchanged it with a new graphics card and when I put back the new card I get 4 beeps (1long, 3short).
I went back to the store and ask the service guy to install it at his PC (and use the x16 PCIE) and check if it works.....it WORKS GREAT!
After I tried change position of the GPU from PCIEx16 (1st slot) to PCIEx2 (2nd slot)...same beeps.
After that I put and ancient Radeon HD6850 to PCIEx16 and works fine (so slot seems to be ok)
Next tried the HD6850 to the PCIEx2 slot...works ok...AND ONLY AFTER i used the HD6850 on PCIEx2 and then exchanged to the RX6700....the card works!
So I tried put it back to PCIEx16 ....beeps again!
So if the card works properly in another systems and in my PCIEx2 slot, why it doesn't work on PCIEx16??!?! I am going crazy and I think something is happening with the motherboard.
I remind you that the old Radeon HD6850 works good on X16 so the slot seems just fine. Additionally the exact same model of Radeon RX6700 worked for 1.2 years just fine and after I got a replacement now it does not work but it's the EXACT same system!
What I have tried
1) Use 750 and 850W PSU
2) Hard reset BIOS (battery + jumper + hold power)
3) Clean contacts
4) Uninstall drivers (does not matter although because the problem is at BIOS POST)
5) Change PSU wires cause it's modular
6) Remove all other PCI(E) cards
7) Updated BIOS to the latest version
My system
Gigabyte B550 Aorus Elite V2 Rev1.1
Sapphire AMD Radeon RX6700 10GB Pulse
Corsair Vengeance LPX 16GB DDR4 RAM CMK16GX4M2D3600C18
AMD Ryzen 5 5600X 100-100000065BOX
PSU both Corsair CX750M and a CoolerMaster MWE Gold V2 850W