Using the site
The tests and guides on this site are free to use for personal and work purposes. By using the site you accept these terms. If you do not accept them, please do not use the site.
Safety
Some tests can affect your health or your devices if used carelessly. Please read the warnings shown with each test.
- Flashing patterns. Pixel fixers and some screen tests flash colors quickly. Do not use them if you have photosensitive epilepsy or have ever had a seizure triggered by light.
- Sound. Test tones, sweeps and noise can be loud. Start at a low volume, especially with headphones, and turn it up slowly. Very low and very high tones at high volume can damage speakers and hearing.
- Stress tests. Processor and graphics stress tests make your device work hard and get hot. Keep air vents clear and stop a test if anything behaves oddly.
- Storage tests. Speed and capacity tests write files to the drive you choose and need free space. They do not erase existing files, but keep a backup of anything important before testing a drive you suspect is faulty.
- Water eject. Playing a tone can push some water out of a speaker grille. It is not a repair for liquid damage.
No guarantee
The tests and guides are provided as they are, without any warranty. Browsers and devices differ, so results can be affected by your browser, system settings and hardware, and some readings are estimates. Use the results as a guide, not as a certified measurement. Follow repair steps at your own risk and check your device's warranty terms before opening it.
Liability
To the extent the law allows, the operators of this site are not liable for any loss or damage arising from the use of the site, its tests or its guides.
Trademarks
Product and company names on this site belong to their owners and are used only to describe compatibility and give instructions. This site is not affiliated with or endorsed by those companies.
Changes
These terms may change. The date at the top of this page shows when they last changed. Questions can be sent through the contact form.