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 GA-H97N LGA 1150 DDR3 SDRAM Desktop Motherboard
FOR GIGABYTE G1.Sniper 5 LGA 1150 32GB HDMI E-ATX Motherboard Test OK
Gigabyte Intel Core i3-4170 GA-H81M-HD3 LGA 1150 USB 3.0 SATA 6Gbps HDMI mATX
intel Core i7-4770 Quad-Core Desktop Processor 3.4 GHZ LGA 1150 8 MB Cache BX80646I74770 (Renewed)
Intel Core i5-4570 Processor 3.2GHz 6MB LGA 1150 CPU44; OEM (Renewed)
Intel H81 Motherboard M.2 NVMe LGA 1150 mATX w/ IO Shield (Random Slot Color)
