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 Intel Core i3-4170 GA-H81M-HD3 LGA 1150 USB 3.0 SATA 6Gbps HDMI mATX
GIGABYTE B365 HD3 LGA1151 Intel 9th Gen motherboard
GIGABYTE B365 HD3 LGA1151 Intel 9th Gen motherboard NEW
GIGABYTE Z590 UD LGA 1200 Intel Z590 ATX Motherboard
Gigabyte GA-IMB370TN LGA 1151 3000 series DD4 So-Dimm, Thin Mini-Itx Motherboard
Gigabyte GA-H97N LGA 1150 DDR3 SDRAM Desktop Motherboard
