How to Reset Windows 7 or Vista Password from login screen

    If somehow you have forgotten your windows password and are looking for way around to login back into your computer then you won’t have to worry.There are many methods are available for resetting windows 7  or vista with out using any software..one simple method is telling here

• Insert a Ubuntu CD in to CD ROM and restart your computer.

• Press any key to boot from CD  

Now you wants to do something tricky ,go to "c:\windows\system32\sethc.exe  " and replace that file using "c:\windows\system32\cmd.exe "  only rename the "sethc.exe to cmd.exe " after that restart your computer,remove ub CD .

• now there appear login screen 
• press shift button 5 or more times
• now a cmd window will be there
• now type the comment net user "one of the account" new password.(net user admin password if admin is an account in that computer).
• restart computer and use new password.