Really unusual thing happened today, all of a sudden the pen doesn't register in a strip about 1/4" wide down the left side of the screen (in landscape, top of the screen in portrait). The little "dot" when you hover literally stops dead about 1/4" from the edge, and it basically just ignores that section of the screen. Finger touches in that strip work just fine, it only seems to be the pen that's affected. I have cold rebooted the machine, tried calibrating the pen (can't do it, as it can't reach the left side "crosses" to tap and calibrate. Have I suffered some kind of digitizer failure? I don't use the pen a lot but it's worked fine for the last several months I've had the computer. Luckily I have MS Complete so I can get a replacement if necessary but I'll be honest, I went through 4 machines to get this one in the beginning and it would really suck to enter that lottery again. It's an 512GB i7 version. Any help or suggestions from anyone else who's experienced this would be great. Thanks!