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

How to Fix OBS Black Screen on Mac

If you see a black screen in OBS when trying to capture your display or a specific window on Mac,...

Fix Windows Security 404 Not Found on Startup

When Windows Security shows a 404 error on startup, it typically means the app can't find its req...

How to Fix Windows Update Configuration Error 0x800f0922

When you see 0x800f0922 during a Windows update, the process usually stops with ...

How to Fix PostgreSQL Connection Refused on Localhost

You try to connect to PostgreSQL on localhost and get connection refused. This usual...

How to Fix 'npm command not found' on Mac

Fix Windows Defender Service Not Starting After Update

After a Windows update, you might find that Windows Defender won't start, leaving your system wit...