PC upgrade - new mobo, cpu etc. monitor blank when PC powered up.

Yennefer8907

Commendable
May 19, 2016
24
0
1,510
Hello,

Today me and my friend wanted to put together the parts that I got for my upgrade. I am changing my FM2+ CPU A8 6600K to the AM4 Ryzen 1500x along with the new PSU (Corsair CX550), RAM (Corsair Vengeance LPX DDR4 3000MHz) and the motherboard being ASRock AB350M-HDV.

When we plugged the monitor connector to my GPU (GTX 750 ti) the screen was all blank and the mouse LED was flashing white every few seconds. Then we plugged it to the motherboard and it was the same. Is the mobo not working? Should I return it?