7 mos ago I moved my computer about 3 feet from where it was to rearrange some furniture. Ever since then my mouse doesn't wait for me to click. All I have to do is just pass over something (fingers off the button) & it thinks I clicked. I am having files deleting themselves, move to somewhere else & having to hunt them down & put them back. Also when I try to highlight lines it picks up letters & moves them somethwhere else. We have tried 3 different new mice with cords(sp?) and finally Dell has sent us a wirlesss. We've also had the mother board replaced. Nothing works. Dell doesn't know what's wrong. We don't know what to do. Any ideas? Also, we've reformatted & reinstalled programs twice. Absolutely nothing changed when we moved the computer except a new monitor.
Help!
Oh yes, tried several mouse pads too.

Help!
Oh yes, tried several mouse pads too.