I just bought Lenovo z510 that came with windows 8.1. I faced a lot of problems and thinking to change the version of the windows 8.1 to 7. If I format my laptop does my warranty void?
If I backup my windows or C: drive. Can I just restore it back so that it doesn't effect my warranty? Any answer will be highly appreciated and sorry for my bad English because it's not my main language.
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