When I startup the PC it has a white bar at the top with a few other dots of colors. The bar has lined that haven't reached the other side as well. The line go horizontally. When I haven't turned on the PC in a while it shows the hp logo then the white bar. But if I turn it off then right back on it doesn't show the love ok just the bar. Before this happened my brother said he was playing his game then the monitor said no signal, going back to sleep. He could still hear the game. He had to turn kf and back on the PC then it worked again. About an hour later same thing . Then when he turned it on the white bar appeared. Also I installed a new gra ppl hics card the GT 1030 I had it for about 2 months and had no issues. Please help ME!