A boot loop occurs when a Windows system repeatedly starts and fails to load the operating system, resulting in an endless cycle of booting attempts. This can be caused by various issues, including corrupted system files or driver conflicts. Here are the detailed steps to diagnose and resolve a boot loop caused by these issues:
1. Initial Assessment and Gathering Information:
- Observe the Boot Process: Pay close attention to the boot process and any error messages that appear on the screen. Note down the exact error codes, phrases, or symptoms. These details can provide valuable clues about the cause of the boot loop.
- Recent Changes: Consider any recent changes made to the system, such as software installations, driver updates, hardware changes, or Windows updates. These changes may be related to the boot loop.
- Access BIOS/UEFI Settings: Access the BIOS/UEFI settings by pressing the appropriate key during startup (e.g., Del, F2, F12, Esc). Verify that the boot order is correct and that the system is booting from the correct hard drive or SSD.
2. Attempt Safe Mode:
- Access Safe Mode: Safe Mode starts Windows with a minimal set of drivers and services. If the system can boot into Safe Mode, it indicates that the boot loop is likely caused by a driver conflict or a corrupted system file.
- Restart the computer. As it starts, repeatedly press the F8 key (for older systems) or hold down the Shift key and restart (for newer systems).
- In the Advanced Boot Options menu, select "Safe Mode" or "Safe Mode with Networking."
- Observe System Behavior: If the system boots into Safe Mode successfully, proceed to the next steps to identify and resolve the underlying issue.
3. Check System Files with System File Checker (SFC):
- Open Command Prompt in Safe Mode: In Safe Mode, open Command Prompt as an administrator.
- Search for "Command Prompt" in the Start Menu, right-click on it, and select "Run as administrator."
- Run SFC Scan: Use the System File Checker (SFC) utility to scan for and repair corrupted system files.
- Type the following command and press Enter:
```
sfc /scannow
```
- The SFC utility will scan all protected system files and replace any corrupted or missing files with known good versions from the Windows Component Store.
- Analyze SFC Results: After the scan completes, review the results. If SFC finds and repairs errors, restart the computer to see if the boot loop is resolved.
- Check CBS Log: If SFC cannot repair all errors, you can examine the CBS.log file to identify the specific corrupted files.
- The CBS.log file is located in the `%windir%\Logs\CBS` directory.
- Open the CBS.log file and se....
Log in to view the answer
