First you need the Win. 7 installation CD...
and then follow these instructions: http://www.ehow.com/how_4836283_repair-mbr-windows.html
then Windows 7 should be able to boot, also do you have any other OS's at the moment or just 7?
and then follow these instructions: http://www.ehow.com/how_4836283_repair-mbr-windows.html
then Windows 7 should be able to boot, also do you have any other OS's at the moment or just 7?