Using I/O Checkup

A troubleshooting aid

I/O Checkup offers free browser-based checks for practical troubleshooting. Results are observations or estimates, not a certification, warranty decision, medical assessment, or guarantee that hardware is healthy.

Use the site with equipment you own or are authorized to test. Follow your device manufacturer's safety and maintenance instructions. Stop a sound, screen, or input test if it causes discomfort.

Your browser and device

You control permissions, sound level, printed output, and exported files. Browser support and device behavior vary; some features may not be available. We may improve or remove a feature as the site develops.

Do not interfere with the service, attempt unauthorized access, or submit sensitive personal data through diagnostic inputs.

Questions and corrections

Let us know about a misleading explanation or unexpected result. We aim to correct confirmed issues, but cannot diagnose or repair physical hardware remotely. Nothing here limits rights that cannot be excluded under applicable law.

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