I run into that symptom when the BIOS is not current on a few PCs.
So I am farily new to building pc's but i believe i have built mine pretty well. Everything is in working order and nothing goes wrong while it is on. The only thing i am having an issue with is when i first start my pc and turn my monitor on, it seems to not get a signal or something because i have to wait then it restarts the tower or i have to manually reset it than all is well and goes right to OS. Not sure if it is a monitor issue, GPU or cable issue. Here is my parts list:
intel i5 7600k
corsair h80i v2
asus strix z270 Mobo
g skill ddr4 3200
evga gtx 1070
evga 750W gold
and storage
asus mg248q monitor with display port use. Not sure if thats the issue but im running at 144hz

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