I'm the last one to ask for help, but I don't know to fix this and I can't find someone who does. There is this rectangle on my screen. My mouse cannot interact with it. It has blue lines on the upper and lower parts. In the middle, it says "DIS" which is highlighted in blue. "DIS" has a minues sign or a dash under it. Next to that is says "ENB". It is just black. Under "ENB" is a plus sign. I am pretty sure that it has to do with that contol unver the monitor, but I can't figure out what. The box had come up previously and gave me trouble, but I rebooted and it was fixed. Then, while I was posting, it came back. What should I do to remove the box? Thank you muchly.