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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 USB headset with microphone plugged into a silver laptop on a dark desk mat
Troubleshooting

Dell Chromebook No Sound: How to Fix It

No sound on a Dell Chromebook: the missing unmute key, Dell's headset fix for the 3100, 3100 2-in-1 and 3400, USB-C headphone reports and speaker repair.

6 min read
Close-up of a cracked corner on a closed matte grey laptop on a workbench
Troubleshooting

Dell Chromebook Overheating: Causes and Fixes

Which Dell Chromebooks have a fan, Dell's care advice on heat and vents, the 3110 2-in-1 update reports, swollen batteries and Dell repair options.

6 min read