I'm installing Ubuntu 16.04 LTS in a dual partition alongside with Windows 8.1. I already have made room in the drive for Ubuntu with the Disk Management and left it unallocated. I'm booting from an USB stick. When the installer starts and I reach the "third party software" and "download updates while installing" but when I press continue it suddenly stops and shows this error "??? ???" along with an OK button and the installer just freezes. I'm installing it on a Samsung Ativ book 6. I have look on other threads but they don't help quite enough and I'm still stuck trying to install it. If anyone can help it would be great.