When you lose your password or need to repair your computer , what you need is a repiar disk to get back access to your computer
Video on how to make windows repair disk ( text tutorial below)
Text tutorial On how to make window’s 7 And 8 repair disk
1.Insert a blank DVD or CD into the DVD drive you wish to create the disc with.
2. If you use Windows 7, click on the Start button and type recdisc. ( at the top of the start menu you should see the recdisc filename appear and should then double-click on it). If Windows 8, type recdisc at the Windows Start Screen and then click on the recdisc search result when it appears.
3. Create a system repair disc screen should now be open.
4. Select the drive that has the blank media inserted into and then click on the Create disc button
5. Windows will create the repair disc and when finished it will display one of these dialogues depending on the version of Windows you are using.
6.You can now click on the Close button and then remove the disc from your drive
7.If you need to sue it , simply insert it into your computer and reboot and Follow the instructions it gives in order to boot your computer with the repair CD and once it loads you can access the recovery options