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

Fix Chrome Black Screen During Videos: Hardware Acceleration

If you're watching a video in Chrome and the screen goes black (but audio continues), hardwar...

Fix 'git pull failed index.lock file exists' Error

When running git pull, you may see an error like:

Fixing Cloudflare 521 Error After Server Restart

You restart your server, wait for it to come back up, then visit your site—only to see a Cloudfla...

How to Resolve Python pip Dependency Conflicts

You run pip install and see a wall of text about DependencyConflict or ...

How to Set npm Prefix to Avoid Permission Denied Errors