NTPASSWD is a bootable CD or USB stick found on the web for free and how to use can reset those account passwords in about 5 minutes. And it's free.
For those that need a lot of support I suggest www.lostpassword.com since they'll mail you the needed media and phone support this.
For me, NTPASSWD (or NTPASSWORD), five minutes and I'm done. Figure 10 minutes for the first time user.
locked out of desktop windows vista emachine w3653 with no password or disk , And guest and administrator are disabled. ?? Help

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