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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.

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Buying Guides

Lenovo Chromebook AUE Dates: Full List by Model

Looking up your Lenovo Chromebook's Auto Update Expiration date? Here are the official dates for popular Lenovo models, sourced from Google's update policy.

3 min read
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How-To Guides

How to Use Trackpad Gestures on a Chromebook

Switching tabs, apps, and desks with the trackpad is faster than reaching for the keyboard once you know the gestures. Here's the full list.

3 min read
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How-To Guides

How to Use Voice Typing on a Chromebook

Want to dictate text instead of typing it? Here's how to turn on and use ChromeOS's built-in voice typing in any text field.

3 min read
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How-To Guides

How to Use the Files App on a Chromebook

New to ChromeOS and not sure where your downloads and cloud files actually live? Here's how the Files app works and how to get the most out of it.

3 min read