Set the options

1. Open Taskbar properties.
2. In the “Taskbar Appearance” group, change the “Taskbar Button”
   option to your liking. Select “Combine if full” if you still want stacking,
   “Never combine” if you don’t want stacking. Note this hack won’t work if you use
   “Always combine, hide labels”.

Adding/editing the registry entry

1. Press Windows Key + R to open the run command
2. Type int “regedit” (without quotes) and press OK
3. Go to HKEY_CURRENT_USER -> Control Panel -> Desktop ->
   WindowMetrics
4. Find the “MinWidth” entry in the right pane.
5. If “MinWidth” is not there, right click on an empty space and
   select New -> String Value. Name this entry “MinWidth” (without quotes)
6. Double click on the MinWidth entry. If you want just the buttons
   to show, set this to 38 if you’re using small buttons, 52 if you’re using large
   buttons. Otherwise any value above 38 will work. If you set a value below 38,
   the buttons will behave oddly.
7. Log off and log back in or restart to see the changes.

Deleting/Uninstalling

1. Press Windows Key + R to open the run command
2. Type int “regedit” (without quotes) and press OK
3. Go to HKEY_CURRENT_USER -> Control Panel -> Desktop ->
   WindowMetrics
4. Find the “MinWidth” entry and delete it.
5. Log off and log back in or restart to see the changes.