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

Fix Windows Defender Blank Screen in Safe Mode

You boot into Safe Mode to run a malware scan, but Windows Defender shows nothing—just a blank wh...

How to Fix Windows Defender Stuck on Loading Screen

If Windows Defender (Microsoft Defender Antivirus) gets stuck on a loading screen or shows a blan...

Removing Malware Causing High CPU Usage in Command Prompt

If you notice high CPU usage in Task Manager attributed to Command Prompt (cmd.exe), svchost.exe,...

PowerShell Script Permission Denied: Fix Execution Policy and Permissions

When you run a PowerShell script and see "permission denied", the cause is usually one of three t...

Windows Security for Ubuntu Installation Checklist

Before You Install Ubuntu

If you're dual-booting Windows and Ubuntu, or replacing Windows...

Repair Windows Security Module Registry: Step-by-Step Guide

If Windows Security (formerly Windows Defender) won't open, shows errors like "This app has been ...