Computer freezes with White lines on monitor screen

The most recent problem appeared on my computer is that....
      
Problem: 
       When I work for a while in my desktop PC, it automatically freezes down with white horizontal and vertical lines on the desktop monitor screen. All the hardware components such as mouse, keyboard or any input-output connections stopped working suddenly.
      The only thing you can do is just unplugging the PC..

Reason: 
      When I surfed on the internet, I learned that the common reasons would be such as,
     Loose connection of your VGA port - where you will connect your monitor cord (or) 
     Graphics card problem which you can find it in the motherboard
      But if your computer don't show any lines when you boot up in other operating system then the definite problem would be with your windows which may be corrupted. 

Solution:
     Try to reattach monitor cord firmly (use the same with graphics card). Do all the basic solution stuff  Free-of-cost-solutions-for-computers


Boot in safe mode and if your windows is corrupted - back up all your data. Insert your windows CD and try to repair the windows. 

Again if the problem continues, the only way is remove your windows OS and reinstall it using the CD. 

That is what I did finally for my computer!! Thank God I didn't have any important data for backup..