NIS 360 has wrecked my laptop

I installed NIS 360 onto my laptop a few weeks ago and after unistalling it, it was slowing down my laptop too much, i couldn't access the internet through anything other than Internet Explorer. None of my programs can update themself and all I have is an expensive paperweight at the moment because I can't access my Open Office documents...

 

Can anyone help?

 

*EDIT*

 

If it helps I have a HP Pavillion G Series laptop with Windows 7 Home Premium.