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

Fix Windows Defender High CPU Usage When Scan Stuck

If Windows Defender is using nearly 100% CPU and a scan appears stuck (e.g., progress bar frozen ...

Fix OneDrive Auto Start Not Working via Registry

If OneDrive no longer starts automatically when you log into Windows, the issue is often caused b...

Windows Security for Ubuntu Installation Checklist

Before You Install Ubuntu

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

How to Reduce PowerShell High Memory Usage

You open Task Manager and see PowerShell consuming 1 GB or more of RAM. This usually happens afte...

How to Fix Windows Activation Error 0xc004c003 After Motherboard Swap

After replacing your motherboard, Windows may show activation error 0xc004c003. This means the ac...

Checklist for Windows Update Connection Refused Issues

When Windows Update fails with a "connection refused" or "server refused connection" error, it us...