Fix Windows 7 Screen Flashes to Desktop with Not Responding Error

Windows 7 may occasionally display a symptom where the screen flashes after user optimizes the computer shutdown speed. The symptom happens whenever user selects a folder or browses to new web page, the desktop which supposed to be in the background will jump or bring to front – flash out for a while, and the “Not Responding” error message will display on the top left corner.

The problem is probably due to optimization to increase PC shutdown speed and decrease time required to shut down the computer. The change can be used by Windows optimization utility or technical user who modifies the registry manually. When the setting is changed, Windows 7 may encounter lack of buffer time or other slowness.

To fix the screen flashing issue, follow steps below.

Run Registry Editor, and then delete the following registry keys:

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 after deletion, and the screen flashing issue on Windows 7 should be fixed.


This entry was posted on Sunday, May 3rd, 2009 at 2:15 am and is filed under Windows 7. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

6 Responses to “Fix Windows 7 Screen Flashes to Desktop with Not Responding Error”

  1. PWmeess
    November 20th, 2009 01:18
    6

    Man! That really works! Finally a simple solution!

  2. Banana
    November 1st, 2009 23:03
    5

    None of those keys were in my registry :/

  3. Remi
    October 27th, 2009 02:15
    4

    Hi I didn´t find the last one: HKEY_CURRENT_USER\Control Panel\Desktop\WaitToKillServiceTimeOut

  4. Tim
    October 20th, 2009 18:43
    3

    THANK YOU!!! DO NOT USE UNIBLUE SPEED UP MY PC 2009. IT WILL CAUSE THIS.

  5. David
    October 18th, 2009 02:33
    2

    none of those registry keys were in my registry to start wit

  6. StrangeTheories
    August 9th, 2009 17:57
    1

    Thanks. It worked. Finally i’ve found this solution. Sometimes this thing was annoing. :X Sorry for my english.

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