I just built my first build. When i power the pc on, the vga led flashes on the mobo the then it starts normally. My monitor is connected to the Vga zotac gta 970. Mobo h310m. I5 9400f. Two rams of vegeance 3000mz set to 2666mhz. 450w corsair psu. The gpu works fine with games i just tested today. But screen turns on and off about each hour. Also the red led near the vga is always tuned on not the one that flashs. I already reinstalled the gpu and pins made no diffenrence.