total windows 11 failure. need to be able to access original user from new OS on a separate drive

Resolving Windows 11 System Failures and Accessing Original User Data on a Separate Drive

Experiencing system failures can be a significant hurdle, especially when critical data and user configurations are involved. Recently, I encountered a complete breakdown of my Windows 11 installation, prompting me to seek effective solutions for data recovery and user access management.

Overview of the Issue

My primary Windows 11 system was installed on a 3TB SATA SSD. Unfortunately, it suffered a total system failure that rendered the OS inoperable despite multiple repair attempts. My uncle, a friend with some technical expertise, attempted to troubleshoot and repair the issue but was unsuccessful. Although the system reported that repairs were successful, Windows still failed to boot normally.

Current Setup

As a temporary workaround, I installed Windows 11 on a separate 1TB M.2 SSD. This reinstallation allows me to access some functionalities, but I am currently using a different user account to access files and run programs related to my original user account. The original user profile and data are substantial, totaling over 2TB due to multiple ongoing projects and stored information.

The Main Concern

My primary objective is to regain access to my original user account without navigating through secondary user profiles. I am exploring options such as migrating the entire original user profile to the new drive or simply logging into the original user account directly. This is especially critical since the original data includes valuable work documents and personal information that I need to access seamlessly.

Potential Solutions

While the scenario presents some complexities, there are established methods to recover or transfer user profiles in Windows 11:

1. Restoring from Backup or Disk Image:
   If backups or disk images of the original user profile exist, restoring them onto the new drive can be an effective solution.

2. User Profile Migration:
   Using Windows built-in tools like the User Profile Migration tool or third-party software can facilitate transferring user data from one profile to another.

3. Accessing Data via Disk Mounting:
   Since the original SSD still functions, connecting it to the current system and mounting it as a secondary drive allows browsing and copying data directly. This ensures safe data retrieval without risking further damage.

4. Creating a New User Profile and Transferring Data:
   Setting up a new user account with the same username and transferring files manually from the old profile folder can sometimes resolve access issues and streamline workflow.

5. Professional Data Recovery Services: