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

Fix Bluetooth Service Not Running in Windows 11

You open Bluetooth settings in Windows 11 and see the toggle is grayed out, or your Bluetooth dev...

Fix 'npm install' Permission Denied When Using Yarn

You run yarn install in a project and later try npm install only to hit...

Fix Chrome Black Screen on Nvidia GPU with Hardware Acceleration

If you're seeing a black screen in Chrome—especially when watching videos or scrolling—and yo...

Fix npm install Permission Denied on Shared Hosting

Activate Python Virtual Environment in VS Code

You've created a Python virtual environment but can't get VS Code to use it. The terminal...

Chrome Certificate Error Invalid Authority: Diagnosis Checklist

When Chrome shows NET::ERR_CERT_AUTHORITY_INVALID and refuses to load a site, it...