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 Z270-A ATX LGA 1151 DDR4 HDMI DP USB-C - PRIME Z270-A
ASUS PRIME B760M-A AX Intel LGA 1700 B760 MicroATX Desktop Motherboard
ASUS PRIME H310-DASH R2.0 Intel LGA 1151 H310 Micro-ATX Desktop Motherboard
ASUS PRIME B365M-A LGA-1151 DDR4 8th/9th Gen Intel mATX Motherboard
ASUS Prime Z590-P LGA 1200 Intel Motherboard
ASUS Prime Z390-P LGA 1151 Intel Motherboard (Tested)
