Ubuntu shuts down my computer at startup

[falmus]

Installed ubuntu today via http://wubi-installer.org/. Everything worked fine but when I'm trying to start ubuntu the computer shuts down. Any suggestions?

[avtolle]

http://ubuntuforums.org/forumdisplay.php?s=&daysprune=-1&f=234 link to the Wubi Forums. You might check out the FAQ sticky first to see if there's something there that can help you.