Checklists for software errors, setup, and tool workflows.

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Latest checklists

You updated Windows 11, and now you get a blue screen. If the error mentions hardware, it's o...

If Git operations suddenly fail with an error like fatal: Unable to create 'path/.git/i...

How to Fix 'fatal: refusing to merge unrelated histories' in Git
If you see fatal: refusing to merge unrelated histories when running git merge...

Fix 'Git Remote Origin Already Exists' in VS Code
If you see “fatal: remote origin already exists” when trying to git remote add origin

Fix Git 'index.lock' File Exists Error in SourceTree
If you use SourceTree and see an error message like fatal: Unable to create 'path/to/.g...

Fix Blue Screen Loop After Windows 11 Update
You install a Windows 11 update, restart, and then get stuck in a blue screen loop—the system cra...