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LaptopDiag is an independent information resource. We do not offer repair services or sell products. If you have a question about one of our guides, found an error, or want to suggest a topic, we are happy to hear from you.
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Tokyo, Japan
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About This Site
LaptopDiag was created to fill a gap in English-language resources for laptop diagnostics — particularly for Sony VAIO, Sharp, and Fujitsu LifeBook models that are popular in Japan but rarely covered in detail outside of Japanese-language forums.
All guides are written based on hands-on testing and cross-referenced with official manufacturer documentation where available. We update content when hardware or software changes make existing information outdated.
We do not accept sponsored content or affiliate arrangements that would influence the accuracy of our reviews. External links to tools and resources are included because they are genuinely useful, not for commercial reasons.
If you have found an error in one of our guides, please let us know. Accuracy matters more than appearing to be always right.