Question No signal on monitor

[qrcode231]

So i've recently updated my gpu from gtx 1080 to rx 6750 xt, after installing gpu i dont get any signal on my monitor.

Cpu: i9-9900k
Gpu: old GTX 1080, new RX 6750 XT
Motheboard: Msi mag z390 tomahawk
Ram: 2x8 3200 mhz
power supply: Supremo fm2 750w

things i've tried:
Inserting older gpu (no result)
Booting on igpu (no result, cant even get to bios)
Reseting cmos
replacing ram sticks
changing cables and monitors

any solutions? or do i have to buy new motherboard

 

[helpstar]

How did you reset the CMOS exactly?

check the power cords from the power supply to the motherboard and GPU again. Might not be fully connected to either PSU side or device side. It can be difficult to connect modular PSUs correctly.
2x 8-pin connected to the GPU?
and
1x8pin plus 1x4pin to the motherboard

did you previously remove the old GPU correctly? Try a different PCIe slot


edit: take some pictures of your built, upload to imgur or similar and post the links

Did you connect both ATX connectors to the PSU side? 1x18pin and one 10pin

 

[qrcode231]

How did you reset the CMOS exactly?

check the power cords from the power supply to the motherboard and GPU again. Might not be fully connected to either PSU side or device side. It can be difficult to connect modular PSUs correctly.
2x 8-pin connected to the GPU?



did you previously remove the old GPU correctly? Try a different PCIe slot


edit: take some pictures of your built, upload to imgur or similar and post the links

Removing cmos battery, and using jumper used both ways didnt change anything
I've tried all 3 pcie slots, gpu is connected with 2x8-pin.
I did remove it correcly, but i didnt unistall nvidia drivers.

monitor shows no signal even after removing gpu, reseting cmos, and connecting monitor to motheboard

i've noticed that there's and led constantly on ez debug led under dram, how can i fix this?

https://imgur.com/a/rflwmMR

View: https://imgur.com/a/rflwmMR

 

[helpstar]

try using only one RAM stick at a time in slot A2 (second from CPU)