Windows 7 is the most exciting os now a days . But sometimes it will fall you in big trouble . There are a lot of reasons behind it .
Sometimes you will see that your pc is troubling while booting . Do not be panic . Solution is here .
1.Insert your Windows 7 dvd in your dvd drive .
2.Then select the option [repair your pc ]
3.Then open [command prompt].
4.Then put the option [ bootsect.exe / nt60 SYS /force ]
or if it does not work give it a try [ bootsect.exe / nt60 all ]
5.Then restart.