If you have only have a single account on your PC and you have forgotten the password of that account, it means your entire PC is blocked and you have access to nowhere.
In such a situation, you can't even run an app to recover the password as you just don't have access to your PC's interface. That's the reason Ophcrack offers a Live CD solution. You just have to burn their disk image onto a CD and you can then boot up your PC from it and follow the on-screen instructions to regain access to your account.
Here's how to download and use Ophcrack on Windows Although Ophcrack has been around for a long time, it is not compatible with Windows 10 well. Once you have created the disk, you can use it to boot your PC from and you should be good to go with recovering the forgotten passwords. What you download will be an ISO file — ophcrack-vista-livecd Ophcrack is a free software program that recovers passwords so the first step you'll need to take is visiting Ophcrack's website.
Since you obviously can't get into your computer right now because you don't know the password, these first four steps will need to be completed on another computer that you have access to. This other computer will just need to have access to the internet. After clicking the Download ophcrack LiveCD button in the previous step, the webpage above should display.
Click the button corresponding to the version of Windows on the computer you'll be recovering the password on. Just to be clear, the operating system of the computer you're using right now doesn't matter. You want to download the appropriate Ophcrack LiveCD version for the computer that you're cracking the password on.
On the next web page not shown , Ophcrack LiveCD should begin downloading automatically. The download is in the form of a single ISO file. If prompted, choose to Download File or Save to Disk — however your browser phrases it.
Save the file to your Desktop or another location that's easy to locate. Do not choose to Open the File. The size of the Ophcrack LiveCD software you're downloading is fairly large. Depending on your current internet bandwidth, the Ophcrack LiveCD download could take as little as a few minutes or as long as an hour to download.
If you're downloading another LiveCD version, like the one for Windows XP, or using another browser, like Firefox or Chrome, your download progress indicator will probably look different. Any flash drive with at least a 1 GB capacity will do. Burning an ISO file is a little different than burning music or other kinds of files and even different than just copying files. If you've never burned an ISO file to a disc before, we highly recommend following one of the sets of instructions I linked to at the top of this page.
Neither process is difficult, but there are very important differences that you need to be aware of. After burning the Ophcrack LiveCD ISO file to a disc or flash drive, go to the computer that you can't get into and continue to the next step. The Ophcrack LiveCD disc or flash drive you just created is bootable, meaning it contains a small operating system and software and can be run independently of the operating system on your hard drive.
This is exactly what we need in this situation because you can't access the operating system on your hard drive right now Windows 8, 7, Vista, or XP due to not knowing the password. Insert the Ophcrack LiveCD disc into your optical drive and restart your computer. The initial screen you see after restarting should be the same one you always see immediately after starting your computer.
There may be computer information like in this screenshot or there may be a computer manufacturer logo. After the initial startup of your computer is complete, as shown in the previous step, the Ophcrack LiveCD menu should display.
You don't need to do anything here. Ophcrack LiveCD will continue automatically after the Automatic boot in x seconds If you'd like to advance the process a little faster, feel free to hit Enter while Ophcrack Graphic mode - automatic is highlighted.
Don't See This Screen? If Windows started, you see an error message, or you see a blank screen, then something went wrong.
If you see anything other than the menu screen shown above then Ophcrack LiveCD did not start correctly and will not recover your password. Don't worry, it's an easy fix. You'll probably just need to make changes to your boot order — easy stuff, all explained in those pieces. After that, go back to the previous step and try booting to the Ophcrack LiveCD disc or flash drive again.
You can continue to follow this tutorial from there.
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