windows wont load

i have a hp mini 110-3000 notebook and today it decided that it would get to the windows loading screen and freeze or reboot, I've tried to re-install it and it gets to the "install now" page after i select the languages and click install, it gets to the "set up is starting" page and the courser starts spinning and stays like that for hours on end

Do a RAM test.
Memtest86.com - Memory Diagnostic

In addition work through these steps for Troubleshooting Windows 7 Failure to Start