Hello to Guru3D, I am trying to diagnose if either my PSU or mobo is dying, PCIE lanes. If I tries to boot the PC without the PCIE connector, it will not boot. Screen stay black, no bios boot. RX480 + 8 pins = partial boot until 3D mode is active. RX480 no connector = no boot Onboard = pc work fine Should the PC boot to Win10 even without power connectors?