AW3423DWF, goes black

Recently my AW3423DWF randomly goes black and I have to power it on and off to get screen back. Recently, it went black frequently and there was a blue vertical faint line with a stuck red pixel about 75% towards the right which would not go away with pixel refresh. But I did a panel refresh and it was resolved. But today the screen again went black and the blue vertical with red pixel was there but disappeared after a few seconds. The monitor is about a year old but with about 100 hours of use as I only use it for gaming and I don't play for more than a few hours.