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SYS.OK — diagnostic bench online 400 guides // 9 modules // updated Oct 2026

Author: Chriss Rakoot

Chriss Rakoot writes and maintains the repair guides on ChromebookFixes. He trained as an engineer, specialized in IT and computer-systems maintenance, and worked for years as an in-person trainer in that field before moving his teaching online. Guides are reviewed and updated when ChromeOS changes.

A person seen from behind using a dark blue laptop on a sofa
How-To Guides

How to Zoom In and Out on a Chromebook

Text too small or too large on your Chromebook? Here's how to zoom the page, the whole display, or use accessibility magnification.

2 min read
A person seen from behind using a dark blue laptop on a sofa
How-To Guides

How to Use a Chromebook Offline

Traveling or without Wi-Fi? Here's what actually works offline on a Chromebook, and how to set it up before you lose your connection.

2 min read
Close-up of the hinge and screen edge of a matte grey laptop on a dark desk mat
How-To Guides

How to Record Your Screen on a Chromebook

Need to capture video of your Chromebook screen? Here's how to record it using the built-in Screen Recorder, no extension required.

2 min read
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How-To Guides

How to Install Linux on a Chromebook

Want to run Linux apps on your Chromebook? Here's how to enable the built-in Linux (Crostini) container, step by step.

2 min read
Close-up of the hinge and screen edge of a silver laptop on a kitchen table
How-To Guides

How to Split Screen on a Chromebook

Want two windows side by side on your Chromebook? Here's how to split the screen using shortcuts, drag-and-drop, or tablet mode.

2 min read