I have 3 home built systems. General function is good. When we try to watch videos, CNN, You Tube, etc. We get 5 to 20 seconds of video then it stops and and a circle comes up for a few seconds before it does a few more seconds of video. I'm thinking I have an incorrect setting some where in the video. The systems have different mbos, video cards, memory, power supplies all of which are good quality and adequate, They all have Win 8 Pro.