How can I reduce the delay before window previews are shown in the Windows 7 taskbar?

Solution 1:

Here's a link to a similar registry trick : http://www.techtalkz.com/windows-7/516236-how-modify-mouse-hover-time-windows-7-a.html

  1. Run Registry Editor in Windows.
  2. Go to HKEY_CURRENT_USER\Control Panel\Mouse
  3. Adjust the MouseHoverTime value (which is in milliseconds and defaults to 400). For example, you can set it to 0.
  4. Restart your computer so that the new setting can take effect.

Enjoy :)

Solution 2:

Run Regedit, go to HKEY_CURRENT_USER\Control Panel\Mouse
adjust the MouseHoverTime data which is in miliseconds. Default is 400.