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I have a 4 months old PC with Windows 7 Home Premium x64.

  • Windows Experience Index is 5.4.
  • Intel i5 processor
  • 6GB memory
  • nVidia GT220 video card.

During games, Windows reported shortage of system resources, so switched the desktop back to "Windows 7 Basic" desktop theme. After game-over, I could switch back to the normal theme and enjoy all Aero eye-candies. However, lately the glass-like window transparency feature got disabled, and I found no ways to enable it again.

There is a Troubleshouting option in Control Panel saying: "Find and fix problems with transparency and other visual effects". If I launch that, it does not find anything.

Event viewer is full with the following warnings:

 The Desktop Window Manager is experiencing heavy resource contention. 
 Scenario   :   The Desktop Window Manager responsiveness has degraded.

Taskbar, window borders, etc, none of the other transparent features work, and I cannot turn them on. Any thoughts?

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That's a tough one, but here's a few ideas:

  • Try re-running the Windows Experience Indexer.
  • Try using MSConfig to disable all non-essential programs (to see if one of them is causing the problem).
  • Try using System Restore to go back to a point when it WAS working right.
  • Try updating (or reinstalling) your video drivers to the latest version.
  • Try a new video card and/or RAM (by this point I'd take it back to where you got it and get them to figure it out, as most 4 month-old PCs are still under warranty, and they should have extra hardware to test with).
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up vote 1 down vote accepted

I found the source of the error: QuickTime Launcher (on the system tray). As soon as I kill the process, transparency comes back. Steve Jobs was right: Adobe is lazy.

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?? Steve Jobs makes QuickTime - not Adobe - or was that sarcasm? – Antony Mar 19 '10 at 2:27

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