02
Jun
2009



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windows 7Every now and then, Windows 7 may show an issue related to weird screen flashes. This problem occurs whenever user selects a folder or browses to a new web page. At this point the screen start flashing out for a few seconds also displaying a “Not Responding” error in the top left corner. Let’s see how to fix this screen flash error in a few, easy steps.

Let me tell that this issue is usually due to an optimization to increase PC shutdown speed. Usually, this optimisation is performed by advanced users after hacking Windows Registry. Other times instead the error is due to technical issues which don’t depend on the user at all. Whatever the reason, here is the steps to fix the screen flashes:

  1. Click Start.
  2. In the Search box, type regedit and press Enter.
  3. Delete the following keys:
  4. HKEY_USERS\.DEFAULT\Control Panel\Desktop\HungAppTimeOut
    HKEY_USERS\.DEFAULT\Control Panel\Desktop\WaitToKillAppTimeOut
    HKEY_CURRENT_USER\Control Panel\Desktop\HungAppTimeOut
    HKEY_CURRENT_USER\Control Panel\Desktop\WaitToKillAppTimeOut
    HKEY_CURRENT_USER\Control Panel\Desktop\WaitToKillServiceTimeOut

Restart the computer for the change to take effect.


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9 Comments to “How to fix screen flash in Windows 7”

  1. Joel B Fitzgerald Says:

    Once I get to regedit, I narrow down the first key to Desktop and then I have two folders: Muicached & Window Metrics. What do I do from here to get to HungAppTimeOut? -I actually can’t find any of those past the Desktop folder…

  2. Holly Says:

    I am having the same problem and cannot locate these ‘keys’ to delete! Please, can anyone help???

  3. Ash Says:

    I’m having the same problems…

  4. Eric Says:

    Hi
    I can not find these in the reg editor: HKEY_USERS\.DEFAULT\ Control Panel\ Desktop\HungAppTimeOut
    HKEY_USERS \.DEFAULT\ Control Panel\ Desktop\ WaitToKillAppTimeOut
    HKEY_CURRENT_USER\ Control Panel\Desktop\ HungAppTimeOut
    HKEY_CURRENT_USER\ Control Panel\Desktop\ WaitToKillAppTimeOut
    HKEY_CURRENT_USER\ Control Panel\Desktop\ WaitToKillServiceTimeOut
    How do I resolve the blink screen in windows 7 ultimate
    Thank You

  5. Mirj Says:

    What do these files do in the first place? Is it ok to just delete them?

  6. Kelly Says:

    #1 — when you get to the “Desktop” in the registry (see description on how to get there), click on “Desktop” folder not any of the subfolders beneath it (like Muicached and Window Metrics). Then, you will see the “keys”in the right window. See if any of them match the aforementioned ones to delete. If so, right-click on the item in the right window and select “delete”.

    Seems okay to delete these. They just tell the computer what to do if an application is “hung” and probably just have too tight restrictions on how long before it is supposed to consider something hung.

  7. Jess Says:

    I can’t find any of these keys. I’m being sure to click on “desktop” and not the subfolders, although I did search through those just in case. I would REALLY like a way to solve this problem because it just makes everything in general impossible to accomplish.

  8. Stefan Boonstra Says:

    Thank you so much for solving this annoying – and time consuming – issue!

    - It was really bugging my rear end off :P

  9. Chris Treu Says:

    Me too! None of the registry entries exist in the location as mentioned! Any other ideas?

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