Question gpu not detected

Jan 26, 2021
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hello guys. so i have the next problem. yesterday my msi z490 gaming edge wifi paired with a i7 10700k was arrived. i change it with my old motherboard and i put everything back on the new board. the problem is my gpu is not detected in device manager ( the gpu is a aorus 3070 master 8gb) i have conected the hdmi cable on the gpu the sistem start up everything is fine but on the devide manager its showing like i use the onboard gpu.. (i cant instal any nvidia driver becouse the sistem say my windows it's not compatible with this driver.. i try a older driver and its the same) the windows its alright because i was using that on my old pc and everything was alright. on the gpu the rgb it's working but nothing else.. any idea what can i do? thank you
 
reinstall windows and make sure MB bios is up to date
i just reinstall the windows. on the mobo i have a 8 pin conector and next to him i have a 4 pin conector. i read its enough if i put only the 8 pin from psu because the other 4 pin is from extreme oc and stuff like that.. can that be the problem?

edit: i update the bios. nothing changes
 
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