Change the Mouse Hover Time before Pop-up Displays
Information: This will show you how to change the delay time, in milliseconds, that the mouse pointer has to stay hovered on a item before it is selected or opens a pop-up in Windows 7. For example, how long it takes for a taskbar open window button before to display it's thumbnail preview while hovering the mouse pointer over it.
Note: If you have the Animations in the taskbar and Start Menu option checked in Visual Effects, then you may not see much or any difference. You will need to uncheck this option first before doing the tutorial below.
Instructions:
Press [Win] + R or take the RUN option from the start menu.
Now type regedit there and press Enter Key to open up the Registry Editor Window.
In regedit go to HKEY_CURRENT_USER\Control Panel\Mouse
In the right pane, right click on MouseHoverTime and click on Modify
Type in a number between 0 to 4000 [400 is default, I use 30] in milliseconds, that the mouse pointer has to stay hovered on a item before it is selected or opens a pop-up.
Log off and log on, or restart the computer to apply the changes.
Note: The lower the number, the faster the response time. If you use an entry of 0, there is no delay before the taskbar thumbnail preview opens. However it is not recommended to use 0 though since it may be hard to navigate through the thumbnails at that speed.