How to set Admin account password without knowing the previous password:

1. Go to Control Panel

2. Click on Administrative Tools

3. Click on Computer Management."

4. Go to System Tools.

5. Then to Local Users and Groups

6. Under the USERS menu u will see all the accounts including the admin.

7. Right Click on the Admin account and select Set Password

8. Enter the new password without the old password

9. VOILA !!!! You are done..