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When I mouse-drag a window's titlebar, the window doesn't move.

When I alt-space, m, arrow keys, the window does move (and then mouse-drag works, until I click and release the mouse button.)

Same problem with window resizing: mouse-dragging the edges or corners does nothing until I alt-space, s, arrow keys.

http://www.sevenforums.com/general-discussion/12772-cant-move-resize-close-windows.html suggested sfc /scannow, but when I ran that, it "did not find any integrity violations."

Applications run fine (file explorer, web browser, media players). Other mouseable window-decorations work fine.

This misbehavior started overnight, without a reboot.

Since then, it's been unaffected by several reboots, and a windows update (just 2 things, for .NET framework). It even happens when booting into Safe Mode. It also happens with other accounts that I create to login to.

Is there a less harsh way to fix this than by reinstalling Win7?

[Edit, Feb 17 '14:] Commenter Daniel Wolfe asked if I'd found a fix. The misbehavior went away by itself, as mysteriously as it came, the same day (see comment "good grief"). It hasn't recurred. Perhaps the answer to my question is: wait and hope.

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Adobe Photoshop also has problems. The mouse won't move document windows, or drag a marquee, or operate the crop tool, or scroll the preview pane in the Noise Ninja plugin. –  Camille Goudeseune Jul 2 '13 at 19:02
    
MS Paint would draw only dots, not curves, when dragging a paintbrush. Then I popped back to this other PC to edit this post, and 30 seconds later, the paintbrush works. And window-dragging works too. Good grief. –  Camille Goudeseune Jul 2 '13 at 19:08
    
Hello Camille, I'm wondering if you ever determined a solution to this. I think that I may be having the same or a similar problem. –  Daniel Wolfe Feb 17 at 3:19

1 Answer 1

Check your accessibility settings. You may have accidentally triggered either Sticky or Toggle Keys: if you hold down your NUM LOCK, CAPS LOCK, or SCROLL LOCK for 5 seconds, does Windows notify you with a beep, a message balloon, or start acting strange? If so, that's Toggle Keys.

If you want to turn these options off, they's in the Ease of Access Center in your Control Panel. While you're there, check out all the features. These are all to help people who have various disabilities and motor control limitations.

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I'm familiar with these settings; they're not active. Even so, they don't affect the mouse to my knowledge. –  Camille Goudeseune Jul 2 '13 at 21:19

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