PCIE 3.0 does not work?

[dontkeept]

Hey guys!



There is a problem with my motherboard (MSI b350 mortar arctic). After a lot of hours of troubleshooting I still do not know what could be the problem. My motherboard does not recognize my videocard if it is installed to the PCIE 3.0 X16 slot (the upper one). I cannot get to the bios, since when i power up the system the VGA ez debug led is on.

So far i have tried : - Bios update (i have the latest 2019 jan.02.)
- Chipset driver update
- I even changed my ram ( does not work with 1 nor 2 sticks of ram)
- I have the latest version of windows 10 too

- I have reseated the card a lot of times



However i can get to windows if i install the card to the pcie 2.0 x4 (the lowest slot).



The other day i installed my card to the 3.0 slot just to see if it works, and i could get to windows, however when i rebooted to enable xmp, i saved the changes to the uefi and after that i could not get to the uefi even if I tried put the card to the other slot (2.0). After a cmos clear i could get to windows with the 2.0 slot. I tried the 3.0 slot with an older card (Gigabyte radeon hd 6670) and the system worked fine!



I hope someone can help me
Thank you so much!

 

[scout_03]

could you try this gpu in another system with a 3.0 slot to see what happens .