Acer extensa 5620-4801 windows messenger

alright, so i got this new laptop for christmas, obviously three days ago.
and it worked fine on windows live beta before.
but now its not working at all.
and ive tried the suggested deleting all photos ect. ect.

its still not working.
it will work with stickam, and myspace webcam picture uploader, and also it will let me take pictures on windows live and post them as my default. ive deleted those too.

it won't let me go into the audio and video settings on messenger either.

ive spent the whoole day trying to figure out whats wrong.

HELP!