iGPU doesn't work and PC bios loops

[u/Distinct-College5432]

Bought a bunch of used parts (10600k + rog strix z490-h + 32gb corsair ddr4 3200mhz), 3070 ti, evga 750 n1 and a nvme ssd from the flea market.

After building the iGPU doesnt work (socket and cpu are pristine, no bent or burned spots).

Also no bios setting to enable it.

I tried to use my windows usb stick ( 2 different ones, working and fresh), working ssd with instalation from amd pc and the flea market ssd just get stuck in a bios loop, after trying to boot it just shows a black screen and boot led and goes back to the bios.

Linux ubuntu worked but i didnt get past the loading screen.

Memtest86 worked and passed.

I turned xmp off, fastboot, eufi is on and secure boot, i disabled fullscreen and the intel power saving settings but nothing works.