Windows stores user passwords in a hashed format inside a registry hive called the SAM file. Normally, this file is locked while Windows is running. Isumsoft’s tool boots a miniature Linux-based or WinPE environment that mounts your hard drive as a secondary volume, granting read/write access to the SAM file.
The tool then applies one of three methods:
Crucially, no data is deleted. All your documents, photos, and installed programs remain intact. Only the authentication check is removed.
If you are an IT admin managing a shared workstation, version 3.1.2 allows you to list every user account on the machine—including hidden Administrator accounts—and reset them all in a single operation. Isumsoft Windows Password Refixer Ultimate 3.1.2
While generally safe, users should be aware of potential pitfalls:
Aggregated from forums and software review sites:
The 3.1.2 update specifically addressed previous complaints about NVMe SSD detection and boot failures on Lenovo devices. Windows stores user passwords in a hashed format
Using this tool is surprisingly straightforward, even for non-technical users.
Step 1: Preparation Download the setup file for Isumsoft Windows Password Refixer Ultimate 3.1.2 from the official website onto a working computer. You will need a USB flash drive (minimum 1GB) or a blank CD/DVD.
Step 2: Create Bootable Media Launch the software. Insert your USB drive. The software will automatically detect the drive. Select "USB Device" and click "Burn." This will format your drive and write the bootable Linux-based recovery environment onto it. Crucially, no data is deleted
Step 3: Boot the Locked PC Insert the USB drive into the locked computer. Restart the machine. You must press the Boot Menu key (usually F12, ESC, F9, or F2 depending on your motherboard manufacturer) and select the USB drive as the first boot device.
Step 4: The Reset Process Once the Isumsoft environment loads (usually within 60 seconds), the tool will automatically scan your hard drive for Windows installations. It will then display a list of all user accounts on that system. Select your locked account, check the "Reset Password" box, and click "Next."
Step 5: Reboot The process takes roughly 5 seconds. Remove the USB drive and restart the PC. You will see that the password field is now blank. Leave it empty and press Enter to log in.
Modern computers often use UEFI boot mode and RAID hard drive configurations. Older password tools often fail to recognize these drives. iSumsoft Windows Password Refixer Ultimate 3.1.2 is updated to recognize hard drives under RAID configurations and supports both Legacy BIOS and UEFI boot modes.