I cannot start up computer past welcome scree

Hello,
i recently installed nod 32 on my computer and at the same time, updates. when the updates (windows update) wasn't doing anything, i stopped installs. i had to reboot so i did. when it started up, it said configuring updates 3 of 3 48% and stayed on that for over 10 minutes. i forced shut down my comp hoping it had only frozen... when i started it again, it said configuring updates 3 of 3 0% and stayed there. it hasnt loaded since and has only got as far as the welcome screen (after typing password) and stayes there for as long as u keep it up. i am now very annoyed, as i have work and alot of stuff to be doing on there. i would apreciate any help to solve this

i have a samsung R60 plus,
32x (i think)


sam