Doesn't take me to the user accounts

Hello,

I really need help fixing my hp pavilion dv4000 laptop. It doesn't go to the user accounts, when I turn on my comp it starts at the restart page where there's "starts windows normally", and other options. But when I click on starts windows normally it loads but takes a long time and it takes me back to the restart page. Even if i go to safe mode it would freeze and after a couple of minutes take me back to the same screen.