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by kijin 5158 days ago
> reinstalling the os voids warranty

That's why you should make a disk image before you wipe Windows. Plug in a Linux Live USB, use dd + gzip to create a bit-for-bit copy of your hard drive (it should compress well because there's no data on the machine), keep the copy in an external hard drive, and then wipe the internal hard drive. Nobody at Best Buy will know what you did.