Possible Duplicate:
Windows 7 alt-tab window disappears to back when aero peek is enabled

I have a very annoying problem that appears randomly. Sometimes it works fine sometimes it doesn't. The problem is that the centered thumbnails that appears when alt + tab is pressed stays behind the window preview, so any subsequent press to tab it shows the full screen preview but the thumbnails remains behind it.

In essence, the z-order of the mini-previews is not the top-most. Any hint or way to fix it?

marked as duplicate by Sathyajith Bhat Feb 6 '12 at 7:14

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

  • Are you on the latest service pack (SP1) and all the available updates from Microsoft? – Kez Apr 17 '11 at 21:15
  • I have precisely this problem, and I have SP1 and all updates. It has been like this for quite some time, actually. – Paul Lammertsma Apr 21 '11 at 19:28

Don't exactly know what causes it, but here's a workaround: Use Win + Tab.

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