It sounds like the system is struggling after the PSU and SATA cable change. Try these steps:
- Run this in Command Prompt (Admin): DISM /Online /Cleanup-Image /RestoreHealth Then: sfc /scannow Boot into Safe Mode and check if it stabilizes.
- Run: chkdsk /f /r to check disk health.
- If issues persist, consider an in-place upgrade using a Windows ISO to repair without losing data. BitLocker Considerations:
- If BitLocker is enabled, suspend it before performing repairs:
manage-bde -protectors -disable C: