The first one I tried was Offline NT Password & Registry Editor. The steps were not easy to follow, especially the long and unclear prompt, finally I gave it up in the middle of the process.

The second one I used was Ophcrack ¨C it recovers windows password. I downloaded Ophcrack software and also Ophcrack XP live CD (a disk image file with 415MB) from its official website. Ophcrack software and Ophcrack live CD are only free for Windows XP and Vista.

I burned a CD with Ophcrack XP live CD, and set my XP machine to boot from the CD. Fortunately, it found my password, so as to Ophcrack software, see below.

Since it did not work for my win 7 laptop, I finally tried a commercial windows password reset tool- Rekeysoft Windows Password Recovery.

It worked perfectly and also was very easy to operate.

Step 1. Download Rekeysoft Windows Password Recovery professional, and install it on an computer that I can run as administrator.

Step 2. Burn it to a blank CD/DVD/USB as the software shows.

Step 3. Insert the burned disk into my target win 7 machine. And set the computer to boot from the disk in BIOS settings.

Step 4. When computer boots successfully, the interface of Rekeysoft Windows Password Recovery comes out.

Step 5. I reset my standard user's password, as below picture shows. And then login with the blank password successfully.

I have not tried Windows Password Breaker, but it is said that it also works very well with simple DOS interface.

For common computer user, if you forgot windows admin password, I recommend you try Rekeysoft Windows Password Recovery and Ophcrack. If you did not forget windows password at present, create a password reset disk for admin account, or backup the the Windows password recovery tool I talked above. Once you cannot login to windows due to password problem, they would solve the issue quickly.