Firstly i have not turned on my pc screen for like 10 days because i was not at home. Before that there wasn't any problem. Right now i turn on my pc for the first time after 10 days and there's a huge bright spot below while the rest of the screen is dimmer. What is going on? It's a HD screen from samsung 1920 x 1200 res 24 inches i bought it in 2009 and it got repaired before while it was under warranty. Can someone tell me what's going on with the screen?