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

Fix Windows Defender Stuck on Loading Black Screen

If Windows Defender (Microsoft Defender Antivirus) hangs on a black screen with a spinning or fro...

How to Fix OBS Virtual Camera Not Showing Up

You've installed OBS Studio, set up your scenes, and want to use the virtual camera in Zoom, Disc...

How to Fix PowerShell Version Mismatch Error

Nginx 502 Bad Gateway: Troubleshooting Checklist

If you're seeing a 502 Bad Gateway from nginx, it usually means nginx can't reach the upstream se...

Fix Windows Activation Error: DNS Name Does Not Exist

When you try to activate Windows and see an error that the DNS name does not exist, it usually me...

Chrome Not Connecting to Wi-Fi? Here's How to Fix It

You open Chrome to browse, but pages won't load even though other apps work. This is a common iss...