content: Some newer computers are shipped with UEFI and not BIOS, AND are unable to run Windows 7. Not because UEFI cannot run it of course, but they built the UEFI to not be able to except a non-GPT partitioned operating system, so that people are forced to run 8.1 or 10. Source; I'm a SysAdmin that had to get a new laptop for work and fucking hates it.