What is SFC/Scannow?
SFC stands for System File Checker, while Scannow is the command used to run the System File Checker. This command is used to scan all of the protected system files on your computer and replace any corrupted or damaged system files with a cached copy.

Why do we need SFC/Scannow?
System files are an integral part of any operating system, including Windows. Any corruption or damage to these files can lead to various problems such as system crashes, inability to run certain programs, and more. SFC/Scannow helps identify and repair any such issues by repairing or replacing the affected files.

How to use SFC/Scannow?
You can use the SFC/Scannow command by following the steps below:

1. Open the command prompt: Press “Win + R” and type “cmd” in the Run dialog box. This will open the Command Prompt.

2. Run the SFC/Scannow command: In the Command Prompt, type “sfc /scannow” and press Enter. This will start the System File Checker.

3. Wait for the scan to complete: The scan can take anywhere from 15 minutes to an hour, depending on the extent of the damage.

4. View the scan results: Once the scan is complete, you will see a message indicating if the scan found any errors or not.

5. View the log file: The scan results will provide information on the files that were repaired or replaced. You can also view the log file to get more details on the scan results.

What are the benefits of using SFC/Scannow?
There are several benefits of using the SFC/Scannow command:

1. Fixes errors and crashes: The command can help repair any corrupt or damaged files, preventing errors and crashes.

2. Improves system performance: By fixing any corrupt files, the system performance can be improved.

3. Prevents data loss: When a system file is damaged or corrupted, it can lead to data loss. SFC/Scannow can prevent this by repairing or replacing the files.

4. Saves time and money: Using the SFC/Scannow command can save time and money, as it helps identify and fix any issues rather than having to reinstall the operating system.

In conclusion, the SFC/Scannow command is essential in maintaining the health of your Windows operating system by repairing and replacing any corrupt or damaged system files.