How do i reload my windows vista operating system

[ttigertap]

I keep getting a blue screen and also my computer hangs up periodically.. should i reload my operating system? i think i have tried everything else....

 

[cin19]

Startup Repair the Windows Vista, here is the link how to. http://pcsupport.about.com/od/toolsofthetrade/ss/windows-vista-startup-repair.htm