Sirefef.y - This fix worked for me

MS Security Essentials says I have this virus, but can't clean it. My computer comes up and stays up for about a minute, then I get a message about a critical problem and my computer will restart automatically in one minute. Does this is safe mode too. With only one minute uptime, it is hard to trouble shoot. Ran the Kaspersky Rescue Disk, but than didn't kill it. Finally, did a system restore to an earlier point with my Windows 7 installation CD. If you don't have any restore points set, your goose might be cooked. I am starting to see some tools to address Sirefef.y but none of them worked for my issue. Thanks.