The MSE forums are here:
http://social.answers.microsoft.com/Forums/en-US/category/mse
Alureon is very difficult to remove, so the PC may still be infected, besides being in a broken state.
Start here -
https://support.microsoftsecurityessentials.com/
and select the link that says - I think my computer is infected - and then select the support option for phone, chat or email (options will vary by Region)
If you are in North America, you can call 866-727-2338 for free help
from Microsoft for virus and spyware infections.
-steve
~ Microsoft MVP Windows Live ~ Windows Live OneCare| Live Mesh|MS Security Essentials Forums Moderator ~