Ensure the24-pin ATX and8/4-pin CPU power connectors are firmly plugged into the motherboard. If your CPU has onboard video, remove the discrete GPU and display from the motherboard's video outputs to rule out GPU issues.
ASUS PRIME B365M-A LGA-1151 DDR4 8th/9th Gen Intel mATX Motherboard
ASUS Prime Z590-P LGA 1200 Intel Motherboard
ASUS PRIME Z490-V Motherboard Intel Z490 10th gen DDR4 LGA 1200 ATX w/ IO Shield
ASUS Prime H370M-Plus Core i7-8700 3.2GHz LGA 1151 MicroATX Motherboard
ASUS Prime Z370-P LGA 1151 Intel Motherboard DDR4 ATX
ASUS PRIME Z490-P LGA 1200 Intel Z490 SATA 6Gb/s ATX Intel Motherboard NEW
