Hi! I'm running an ATI Radeon X600 Pro video card. It's over a year old, but I haven't used the computer very much---I use another one primarily. All of a sudden, when I boot the computer, the splash screen has a reddish purple tint, and windows retains this color after it boots. I have been using this conputer lately in addition to the primary one, but I've been using the same monitor for both computers---switching the connection to the computer I'm using at that particular time. I'm not hot-switching---I connect the monitor when the computer is turned off. I can connect the computer with the color problem to another monitor, and there is no issue---it works fine. The first monitor has no problems connected to other computers. The X600 computer has no problems connected to another monitor. The monitor that suddenly has a problem is a dell d1226h 19", at 60 hz. Any ideas as to what is occurring? I haven't added any programs or any other hardware, Any and all responses will be greatly appreciated. Thanks.