Windows data recovery and file recovery

Important notice:

  1. once found data lost, DO NOT do anything to the Computer or Harddisk, any Writing or Use operation can render data recovery impossible.
    • 数据丢失,务必谨记的是不要对丢失数据所在分区进行操作,因为新的数据很可能覆盖丢失数据
  2. Never store important Data on C drive (or OS drive) if possible
    • 重要数据不要放置到系统分区,因为系统分区的数据读写是最频繁的,非系统盘数据恢复起来比较容易和完整
  3. Never count on Data Recovery, best practise to protect data is making mutiple copies of backup on your portable usb drive, DVD, or online storage Before bad thing happens.
    • 数据恢复仅仅是尽可能地还原数据,对于重要的数据,日常还是要备份多几份为妙

Windows problem before Login

  1. Start the computer and press F8 key immediately.
  2. In the “Advanced Boot Options” window, select “Safe Mode” and then press “Enter”
  3. Login to your account.
  4. Click Start
  5. In Start Search box, type “regedit”, and press “Enter”.
  6. In Registry Editor window, navigate to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList
  7. In the left pane, look for the folder name starting with S-1-5 (SID key) followed by a long number, then click the folder and locate ProfileImagePath from the right pane to verify that this is the user account profile that has the error.
  8. If you have two folders starting with S-1-5 followed by same long numbers and one of them ends in .bak
  9. Change the .bak folder to normal one. To do this:
  10. Right click the folder without .bak and choose “Rename”. Then add .ba at the end of the folder name.
  11. Right click the folder with .bak and choose “Rename”. Then remove “.bak” at the end of the folder name.
  12. Right click the folder with .ba and choose “Rename”. Then change the .ba to .bak at the end of the folder name.
  13. Choose the folder without .bak
  14. In the right pane, right click on RefCount and then select “Modify”
  15. Under “Value Data”, type 0 and then click OK.
  16. Right click on State and then select “Modify”
  17. Under “Value Data”, type 0 and then click OK.
  18. Close Registry Editor window.
  19. Restart the computer in normal mode.
  20. Log on to your account again.