Auto restart when system gets dead lock
Click Start—Run, keyed regedit and press Enter to open REGEDIT, expand and find out the branch hkey_local_machine\System\CurrentControlSet\CrashControl, and on the right side pane, find out the key AutoReboot, change the DWORD value to 1, exit REGEDIT and restart the computer. Later system would auto restart when gets system down.
  Auto restart when explorer breaks down
When explorer breaks down, such as desktop icons and taskbar don’t display, mouse cursor disappears, Alt+Tab combination to switch windows also fails, we have a method to let computer auto restart: open REGEDIT, take turns to find out the branch hkey_local_machine\Software\Microsoft\Windows Nt\CurrentVersion\Winlogon, on the right side pane, find out the key AutoRestartshell (if there’s no, then create one), change the DWORD value to 1, restart the computer to let it take effect right away.