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Windows Recovery Environment

lastmod 2019-03-16created 2019-03-1617 edits

Advanced Boot Options with F8

Requires administrator privileges. 

bcdedit /set {default} bootmenupolicy legacy

Then reboot and press F8.

To revert: 

bcdedit /set {default} bootmenupolicy standard

Disk check

  1. Right-click the Start button, then click Command Prompt (Admin).
  2. When the Command Prompt appears, type chkdsk /r and press Enter.
  3. When asked whether to run the disk check at the next boot, press y and continue.
  4. Restart the PC to run the disk check.

Checking for file corruption in the Windows component store

Describes how to use the System File Checker tool (SFC.exe) to resolve missing or corrupted system files in Windows 8.

If Windows Resource Protection (WRP) files are missing or corrupted, Windows may not work correctly. For example, some Windows functions may not work, or Windows may crash. The System File Checker tool (SFC.exe) scans for missing and corrupted system files and repairs them.

Checking the Windows component store for file corruption

  1. Press [Windows logo key+X], then click "Command Prompt (Admin)".
  2. Type the command below and press Enter. (If typing is difficult, copy the command, right-click in the Command Prompt, and click "Paste".)
  3. dism /online /cleanup-image /restorehealth
  4. Depending on the PC, it may take a long time to complete.
  5. Then try a system scan with the following command.
  6. sfc /scannow
  7. It searches for problems in system files and repairs whatever can be repaired.
  8. When the scan reaches 100%, check the result message.

Windows Safe Mode

Windows safe mode.

Blue screen

You can troubleshoot common stop error codes such as the following.

  • CRITICAL_PROCESS_DIED, SYSTEM_THREAD_EXCEPTION_NOT_HANDLED, IRQL_NOT_LESS_OR_EQUAL, VIDEO_TDR_TIMEOUT_DETECTED, PAGE_FAULT_IN_NONPAGED_AREA,

SYSTEM_SERVICE_EXCEPTION, DPC_WATCHDOG_VIOLATION Note that hexadecimal error codes such as 0x0000000A, 0x0000003B, 0x000000EF, 0x00000133, 0x000000D1, 0x1000007E, 0xC000021A, 0x0000007B, and 0xC000000F may also appear.

Troubleshooting

BOOTMGR is missing

However, because the boot loader is gone and Windows RE cannot be loaded, you have to boot from Windows installation media. Then, to fix this problem, run the Command Prompt and 

:: MBR 영역 재구성
bootrec /fixmbr
:: 부팅 영역 재구성
bootrec /fixboot
:: OS 스캔 (?)
bootrec /scanos
:: BCD 재빌드
bootrec /rebuildbcd

enter these in order. Note that the bootrec command exists only in Windows RE, so use RE. Running Startup Repair at the same time is even better.

See also

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