Whats wrong with my pc?



If it's a new build you really just need to take it apart and reseat everything. I had the exact same issue on one build and even though I made 100% sure everything was connected it just wouldn't show on the monitor. Until I rebuilt it that is. Try that.
 


Is this a new build? That's the first thing we need to know. If it's not a NEW build then what was the last thing you did before it happened?
 


Actually it's the second time and the first was as I was typing my comment, calm down. Take it apart and rebuild it as I said the first time.