Reboot Device
In case your has crashed and beyond restoration simply by hitting the Apply Settings/Restart Servers button, you can always have the last resort to completely reboot the from ground level up by hitting the Reboot Device button.
In most of the cases, you don’t need to use this Reboot button to restart your from ground level up. Normally, you should use the Apply Settings button on the Apply Settings page for almost all the cases of restarting/rebooting with new settings. However, if you find the Apply Setting/Restart Servers button could not bring the to a restart that works properly with the viewer, you can then try to use the Reboot button here. But as a rule of thumb, you should try the Apply Settings/Restart Servers button first, before you try the Reboot button here on this page.