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

Fix Windows Update Clean Up Tool Not Working

You run Disk Cleanup, check "Windows Update Cleanup", but nothing happens—or the option is missin...

Jupyter Kernel Not Starting in VS Code: Quick Fixes

You open a Jupyter notebook in VS Code, try to run a cell, and the kernel either hangs on "Starti...

How to Reinstall Windows Defender After Error 404

If you see a 404 error when trying to open Windows Defender, it usually means the app's files are...

Command Prompt Setup Guide for Beginners

What is Command Prompt?

Command Prompt is a text-based interface in Windows that lets you...

OBS Virtual Camera Not Working on Windows 10 – Fixes

You set up OBS Studio, enabled the virtual camera, but Zoom or Discord shows nothing. The virtual...

Fix PuTTY Connection Refused After Server Restart

You restart your server, open PuTTY, and see "Connection refused". This is a com...