update:
Its totally fubar'd
Nothings worked.
me and my brother are going to look on the web to try and find a way of reinstalling windows without loosing all the data and settings (if thats possible) and try that.
Otherwise its going to be a format, reinstall and take it to some specialist hard drive recovery place to see what can be resurected.
F'king microsoft update that did it. For gods sake bill, sort it out! its not like you havent the money.......
Sirius