How can I transfer windows 7 to windows 11 without losing data?

How to transfer windows 7 to windows 11 A Manual Backup and Migration Method

Our Core Objective: Locate and back up all personal data before transferring it to the Windows 11 system.
Step 1: Locate Personal Files:
Prioritize core paths: C:\Users\[Your Username]\. This folder contains key data such as “Documents,” “Pictures,” “Music,” “Videos,” “Desktop,” and “Downloads，Also check the desktop, manually created folders, and non-standard storage locations (e.g., custom paths like C:\OldProjects\).
Step 2: Select Migration Media:
Use a portable hard drive or high-capacity USB drive of 256GB or larger，For smaller data volumes, cloud storage tools like OneDrive or Google Drive are also viable.
Step 3: Perform the backup operation:
Directly copy and paste all folders identified in Step 1 to the selected migration medium to complete your personal data backup (this backup is crucial for data security)，Later, connect this medium to your Windows 11 computer and copy the backup files to the corresponding paths in the new system.

One small step you might overlook: On the old computer, navigate to C:\Users\[YourUserName]\AppData\. This folder is hidden; you'll need to enable “Show hidden files and folders” in Folder Options.