Knowledge base for software setup, errors, and daily tool work.

Fix Windows Update Blank Screen with No Cursor

You install a Windows update, reboot, and instead of the login screen you see a blank display wit...

How to Fix Microsoft Store Error 404 (Not Found)

If you see a 404 error when trying to open an app or page in the Microsoft Store, it usually mean...

Check Which Process Locked a File Using PowerShell

When you try to delete, move, or rename a file and get an error like "File in use" or "Access den...

Fix High CPU Usage by MsMpEng.exe (Windows Defender)

If your system feels sluggish and Task Manager shows MsMpEng.exe using 30–100% CPU, Windows Defen...

How to Fix '404 Not Found' Error in Windows Command Prompt