Please help Windows 11 keeps restarting after resetting (keep personal data)

That restart loop after a reset usually points to either a corrupted bootloader or incomplete system files after reinstall. Since you already checked with Diskpart, I’d suggest these next steps:

Boot Repair: From Advanced Startup > Troubleshoot > Advanced options, run Startup Repair. It often rebuilds boot files automatically.

Rebuild Boot Records: In Command Prompt (admin), try:

bootrec /fixmbr

bootrec /fixboot

bootrec /scanos

bootrec /rebuildbcd

Check Partitions: Make sure the EFI/System partition is still set as active. Sometimes resets mess up partition flags.

Repair Image: Run sfc /scannow and DISM /Online /Cleanup-Image /RestoreHealth if it boots into recovery CMD.

If none of these work, you might need to create a bootable USB with Windows 11 and do a repair install (not a full clean install). That way your data stays intact but system files are properly restored.

👉 Many users with Lenovo laptops ran into this exact loop, and a USB repair install usually solved it.