Windows 8. My new laptop came with it preinstalled, but as I chose the option of not buying an operating system, I have no license key and so need to install my own OS. It took me several minutes of trying to work out how to reboot the computer, but I finally managed it. I then spent the next 45 minutes trying to work out why the fuck my Windows 7 install disc was refusing to boot at all.
It turns out that Windows 8 has a security 'feature' where it will prevent anything other than Windows 8 from booting. Even CDs and previous versions of Windows. It even stops the BIOS splash screen from showing, just to be extra secure. FORTY FIVE MINUTES I wasted because of that stupid bullshit which adds no useful security benefits whatsofuckingever and does nothing more than annoy people trying to actually use their computer
