I contacted MS for support a few years ago when I built my last Windows machine. I didn't have another Windows machine to create the install media. I spent more than a full day of trying and failing to use standard linux and OSX tools to create the flash drive. I followed dozens of guides that had all stopped working as MS kept making their installers non-standard in new ways. Finally, I called MS for help. They tried for 2 hours then told me that they'd have a senior tech call me in 2 days... The next day I called MSI (my motherboard manufacturer) and not only was I never put on hold, the engineer that answered the phone told me the problem diagnosed the exact problem and told me the only way to fix it, all in less than 10 minutes. I then spent an hour following the advice, and finally got Windows installed. The only other time I called MS support for Windows was when my new copy of WIndows 8.1 wouldn't install on my verified compatible system. That was another epic 3 hour call, though I think they did wind up getting it to work. I think it was some security or DRM thing. Never having to call MS support is one of the benefits of using Linux.