AWS EC2 Reset Windows Password

AWS EC2 Reset Windows Password (Win 2008)

1. Detach root volume from the inaccessible Windows (A) instance to another Windows instance (B) as a non-root volume. Be sure B is running identical version of Windows.
2. Log into B
3. Mount the secondary volume
4. Browse to the secondary volume into \Program Files\Amazon\Ec2ConfigService\Settings\config.xml 
5. Find the section for "Ec2SetPassword"
6. Set the "State" property to "Enabled"
   

   <Ec2ConfigurationSettings>
     <Plugins>
       <Plugin>
         <Name>Ec2SetPassword</Name>
         <State>Enabled</State>
       </Plugin>
   

7. Replace the file (accept the UAC warning)
8. Update the disk signature
1.  Open regedit.exe
2. Under HKEY_LOCAL_MACHINE, find "Windows Boot Manager"
3. This should look like "HKLM\BCD00000000\Objects\{XXXXX-XXX-XXXX-XXXX-XXXXXX}\Elements\"
4. Go to sub-path "11000001"
5. Select "Element" Value
6. Find the byte value found at offset 0x38
   
7. Reverse this set of bytes (6E E9 36 02)
8. This is the disk signature that this disk needs to have
9. Open Admin Command Prompt
10. Run diskpart
11. Select the disk of the drive from Windows instance A
    select disk 2
12. View the disk signature of this drive
    uniqueid disk
13. If this isn't what was found from step 7, then we need to make it so
    uniqueid disk id=6EE93602
14. This will cause this volume to come offline
9. From AWS, detach this volume from B and add it to A as /dev/sda1
10. Proceed to retrieve the random password as usual