What you can do is create a Macrium Reflect Rescue Disk on another computer. Use that disk to boot the computer you are locked out of. Make an image of the system partition. If you have to do a clean install, then you can mount the image that you made and it has options to access the user files that are saved in the image.
You can also make a MiniTool Partition Wizard boot disc and use that to shrink the system partition and make a partition to hold the image you can create with Macrium Reflect.
Or, for that matter, make the MiniTool Partition Wizard boot disc, shrink the existing system partition to as small as possible, create a new partition for a clean install, set it as active, then do the clean install to it. Once you have everything copied over from the old partition that you want/can then delete that partition and expand the new system partition to fill the space. Just be careful to know where your boot files are before you delete the partition.
1. Boot from the DVD or USB install media 7. 8, 10
2. Click SHIFT+F10
3. Type regedit and press enter
4. Navigate to HKEY_LOCAL_MACHINE
5. File menu click Load Hive
6. In the file name field type %windir%\system32\config\SAM and hit enter.
7. Name the Hive Test. Click ok, If you have more than one partition and the file comes up prosess in use you need to navigate to the correct partition, windows\system32\config\SAM, Name the Hive Test. Click ok
8. Navigate to HKEY_LOCAL_MACHINE\test\SAM\Domains\Account\Users\000001F4
9. From the right side pane double-click the F entry.
10. The line that starts with 0038 is what you want to edit. The value next to 0038 is 11, replace it with 10.
11. Back in the Registry Editor, from the left side click on the name you gave to the hive you loaded earlier and from the file menu click unload Hive.
12. From the File menu, restart the computer and you are done. The Administrator account is now enabled.
13. To remove the admin account follow the steps again and put the 11 back.
Last edited by Brink; 10 Sep 2015 at 22:34.
Reason: added tutorial link for more info
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