Photoshop :: Color Selection/Eye Dropper

I have been using Photoshop for quite sometime now for basic image editing and website design. I recently upgraded to 7.0 since 4.0 was giving me some trouble with memory errors that would result in loss of work. Anyways my question is this: Lately (as in the past week or 2) I have been having a problem with my Photoshop, when I would click on the color selector (the 2 color boxes in the tool selector box) it would select the Eye Dropper tool instead. And from there I could not do anything without hitting Alt + F4, after doing that the Eye Dropper tool would go away and I would be back where I started, still unable to change or choose a color. While the Eye Dropper tool is active when I do this I cannot click on anything or do anything, the Eye Dropper tool will not even function. I would only get an error sound as if I was trying to do something I'm not supposed too. I've never encountered this before and cannot find this same problem anywhere online. I have reinstalled PS numerous times and still the same effect. Has anybody else had or seen this problem? How can I fix it? Thank you for your time.

Nevermind, I found the problem. Apparently if I run PS with only 1 monitor on I get this error, but as long I have both monitors enabled it works fine. That's weird but atleast it works now.