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.
GIGABYTE B760 DS3H AC DDR4 Intel LGA 1200 ATX Motherboard
Gigabyte B760 DS3H AC DDR4 Intel LGA 1700 Wifi Motherboard
GIGABYTE B365M DS3H Intel 8th/9th Gen B365 DDR4 LGA 1151 Micro ATX Motherboard
GIGABYTE B760 DS3H AC DDR4 Intel LGA 1700 ATX Motherboard
UPDATED BIOS GIGABYTE B450M DS3H DDR4 AM4 MATX Motherboard
GIGABYTE B560M DS3H Motherboard LGA 1200 Intel 10th/11th Gen B560 Micro-ATX
