Windows 7 has this great amazing feature taskbar thumbnail preview which allows you to see what happening in the programs you have opened, which are being shown in taskbar. This is feature is really helpful when you have so many programs running and you can see a small snapshot of the any program by hovering your mouse over the taskbar button.
Also Read [ Windows 7 ]- Large Taskbar Thumbnail Preview Size In Windows 7
However taskbar thumbnail feature is quite useful, but if your computer does not have the latest hardware and graphic it could be a resource hungry feature which may slow down over speed of operation in windows 7, so some users still would like to disable taskbar thumbnail feature.
Also Read [ Windows Vista ] – Change The Size Of Thumbnails Of Taskbar Items In Vista
You can easily disable taskbar thumbnail in windows 7, through group policy - follow the procedure below to disable thumbnail previews.
1. Press Window Key + R to open Run prompt and type gpedit.msc and press Enter or press Ok
2. Navigate to User Configuration -> Administrative Templates -> Start Menu and Taskbar in left side pane in Local Group Policy Editor.
3. Locate the entry Turn Off display of thumbnails in windows 7
3. Double click this settings, select the enabled radio button and then click ok
If for any reason you are not able to open group policy in windows 7, then you can try the alternative procedure given below for the same using registry.
1. Open Run prompt and type regedit and press ok button
2. Navigate to the following registry path
Note: If Explorer registry sub-key does not exist, then right click on Policies and click New -> Key and name it as “Explorer”.
3. In the right pane, right click on a blank space, and then select New -> DWORD (32-bit) Value.
4. Type NoThumbnail as the name for the new registry value data.
5. Double click on NoThumbnail to modify its value data.
6. Type 1 and click on OK.
7. Log off and logon again to see the change.