We set up a server for Teamspeak and Minecraft in a friend's appartment. At the moment he is not around. The server seems to have crashed, but not completely (still able to ping). I do have root, but I can't connect via Windows Remote Desktop. The FTP server is also down ("Server unexpectedly closed network connection").
How can I reboot the server? Is there a way to cause a kernel panic or something like that (last resort)?