Check model and motherboard information.First things first: The Diagnostics appĬhromebooks now have a Diagnostics app specifically for troubleshooting, which can provide valuable information when narrowing down your issue, monitoring a specific problem, or - if it comes down to it - knowing exactly what hardware you have for repairs or replacements. Read on to discover easy fixes to the most frequent issues Chromebook users face. First things first: The Diagnostics appįrom issues with updates to internet connectivity, troubleshooting common Chromebook problem doesn’t have to ruin your day.