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One of my workstations has been crap-ified by a coworker. Thankfully he's no longer with us, but the junk he installed still remains. When I log on locally into my account on this workstation, a yellow rectangle pops up on the bottom right of the primary monitor that I can't close. Because it's completely blank, I have no idea what's drawing it, and the process list is kinda long. I'm getting tired of seeing it every time I go to that computer and it's always in front of any window, so it's totally dead space on the screen. Here's a picture of the primary monitor and part of the secondary:

enter image description here

Although the wise thing to do would be to flatten and reinstall, I can't. For reasons. How can I determine what is drawing this so I can get rid of it?

Thanks.

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Does anything happen when you Right-Click it, and if you press Windows-Tab to change the focused window, does it show as a window or stay above the aero switch display? –  Ben Franchuk Mar 4 '14 at 1:05
    
Nothing that gives it away when I right click or alt-tab, but when alt-tabbing, an icon appears in the mini-window that hints that it's something to do with wireless. That narrows it down a lot actually. –  BB ON Mar 4 '14 at 1:20
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BAM! Killed it. Thanks a lot. Is there anything I can do when I don't get lucky like that? –  BB ON Mar 4 '14 at 1:30
    
As Scott Rhee suggested, Process Explorer will do the trick. I remember that I used to know of a command that would kill every process but system-necessary ones and ones in use, and then identify the ones that got killed, but i forget exactly what it was... –  Ben Franchuk Mar 4 '14 at 1:49

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up vote 4 down vote accepted

Process Explorer will help you. Run the tool and drag the target mark (located at the end of its toolbar) to that yellow rectangle you want to investigate. Possibly it will locate a process which is displaying that rectangle. At that stage, you may check its properties (name, path, ...) and/or kill it by right-clicking on the process.

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