Use of sfc /scannow in Windows OS

 

 

The sfc /scannow command is a built-in Windows utility that stands for "System File Checker." Its primary purpose is to scan and repair corrupted or missing system files. Here’s how it works and why it’s useful:

Uses of sfc /scannow

1. File Integrity Check: It checks the integrity of all protected system files in Windows.

2. Repair Corrupted Files: If it detects any corrupted files, it attempts to replace them with a cached version stored in a compressed folder located at %WinDir%\System32\dllcache.

3. Resolve System Issues: Running this command can help fix a variety of system-related issues, such as crashes, application errors, and other malfunctions caused by corrupted files.

4. Maintenance Tool: It serves as a maintenance tool to ensure that your system files are in their correct state, contributing to overall system stability.

How to Use

1. Open Command Prompt as Administrator: Search for "cmd" in the Start menu, right-click, and select "Run as administrator."

2. Type the Command: Enter sfc /scannow and press Enter.

3. Wait for the Scan: The scan may take some time, depending on your system. It will display the results once it's finished.

Interpreting Results

• No Integrity Violations: No issues found.
• Corrupt Files Found and Repaired: Indicates that issues were found and fixed.
• Corrupt Files Found but Could Not Be Repaired: In this case, you may need to take further action, such as running the DISM tool or seeking other solutions.

Using sfc /scannow can be an effective way to troubleshoot and resolve system file issues in Windows.

Fix vcruntime140_1.dll was not found

Common error message:  the code execution cannot proceed because vcruntime140_1.dll was not found

The error message indicating that vcruntime140_1.dll is missing usually means that a required Visual C++ Redistributable package is not installed on your system. Here’s how to resolve it step-by-step:

Step 1: Download Visual C++ Redistributable

1. Visit the Official Microsoft Website:

   • Go to the Microsoft Visual C++ Redistributable download page.

2. Choose the Correct Version:

   • Look for the version that matches your operating system (x86 for 32-bit, x64 for 64-bit).

Step 2: Install the Redistributable

1. Run the Installer:

   • Download the installer and run it.

2. Follow the Installation Steps:

   • Accept the license agreement and complete the installation.

Step 3: Restart Your Computer

• After installation, restart your computer to ensure all changes take effect.

Step 4: Check for the DLL

• After restarting, try running the application again to see if the error persists.

Step 5: Reinstall the Application (if necessary)

• If the issue continues, consider reinstalling the application that generated the error. This can sometimes resolve missing dependencies.

Step 6: Update Windows

1. Check for Windows Updates:
   • Go to Settings > Update & Security > Windows Update.
   • Check for updates and install any available updates.

Step 7: Scan for Corrupted Files

1. Open Command Prompt as Administrator:

   • Type cmd in the Start menu, right-click on Command Prompt, and select "Run as administrator".

2. Run System File Checker:

   • Type sfc /scannow and press Enter. This will check for and repair corrupted system files.

Step 8: Download the DLL Manually (Last Resort)

If none of the above steps work, you can download the vcruntime140_1.dll file from a reputable DLL site, but be cautious with this approach. Make sure to:

1. Download from a Trusted Source.
2. Place the DLL in the Appropriate Folder:
   • Usually, it should be placed in the folder of the application that requires it or in C:\Windows\System32 for 64-bit applications or C:\Windows\SysWOW64 for 32-bit applications.

Step 9: Seek Further Help

• If the issue persists after all these steps, consider reaching out to the application’s support team for further assistance.

By following these steps, you should be able to resolve the error regarding the missing vcruntime140_1.dll file.

What is the difference between the DD2 and DR3 RAM in terms of speed and physical appearance?

 

DDR2 (Double Data Rate 2) and DDR3 (Double Data Rate 3) are both types of RAM (Random Access Memory), but they have key differences in speed, performance, and physical appearance. Here's a breakdown:

Speed

DDR2 Actual image

 

DDR3 Actual image

  

 

1. DDR2:

   • Data Transfer Rate: Typically ranges from 400 MHz to 800 MHz.
   • Bandwidth: Up to 6.4 GB/s (for DDR2-800).
   • Latency: Generally higher compared to DDR3.

2. DDR3:

   • Data Transfer Rate: Typically ranges from 800 MHz to 2133 MHz.
   • Bandwidth: Up to 17 GB/s (for DDR3-2133).
   • Latency: Generally lower compared to DDR2, meaning better overall performance.

Physical Appearance

1. DDR2:

   • Pin Count: 240 pins for DIMMs (Dual In-line Memory Modules).
   • Keying: The notch (key) on the DDR2 module is positioned slightly off-center and is different from DDR3, to prevent improper insertion into the wrong slot.
   • Height and Layout: DDR2 modules are slightly taller and have a different layout compared to DDR3.

2. DDR3:

   • Pin Count: 240 pins for DIMMs, but the arrangement and keying are different.
   • Keying: The notch on the DDR3 module is located in a different position than that on DDR2, which ensures compatibility with DDR3 motherboards and prevents inserting DDR3 into DDR2 slots.
   • Height and Layout: DDR3 modules are generally shorter and have a different heat spreader design.

Summary

• Speed: DDR3 offers higher speeds and better bandwidth compared to DDR2.
• Physical Appearance: DDR3 modules have a different notch position compared to DDR2 and are generally lower in height. This physical difference helps prevent compatibility issues between DDR2 and DDR3 slots.

If you're upgrading or building a system, make sure your motherboard supports the specific type of RAM you're planning to use, as DDR2 and DDR3 are not interchangeable.

Convert Exe file to MSI file

1. Open Microsoft Store on your computer.

2. Search exe to msi using the search bar and click the Install button.

3. Once successfully installed, find the "Exe to Msi Converter free" and open the application.

4. Click the button with dotted placeholder display and locate your ideal.exe files to be converted to .msi.

5. Once you've selected a.exe file, click the button "build MSI." If successfully converted, just click the "ok" button to finish.

6. Locate the.msi file and try to install it using the new executable extension file. You may find the newly converted.msi file together with the.exe files.

7. Check the property of the file to see the actual conversion of the extension file; right-click the executable and click properties.

Well done! If you want to use it on a Windows server, you may do so!