Hi, Thanks for your reply.
I have Vive pro starter kit. so I have Vive pro HMD and Base station 1.0.
CPU : i7 7700
GPU : GeForce 1080 HOF
Motherboard : ASUS Z170-a
power : 550W
um, At first, it runs normally. But After a while, the screen turns gray.
And few seconds, turns back again normally. and turns gray again.
Even when the screen is gray, the sound keeps coming out.
It was working normally until a few days ago.
Recently I changed my motherboard (but same model), and re-install OS, and add three HDD drive.
I tried to remove 3 newly added HDD drives because of power supply, but the result was the same.