Why does it not start?
it keeps saying automatic repairing windows
you'll have to buy a new windows CD which is about 80$ or 120$ depending on the version (64/32 bit, home, pro, etc)
The easiest fix is to get a windows installation media dvd/usb/network and delete every partition when asked in order to make a new one for windows. You'll lose all your data though.
Use that windows cd, when booting press f# (it should be displayed what to press) and select the windows CD. Everything from now on should be an easy graphical enviroment