Most (if not all) new computers these days come with UEFI firmware instead of the old Bios firmware. The new firmware settings and menus are a bit different than most people are used to, which helps contribute to confusion when trying to install OS's other than the pre-installed Windows that comes on most computers. In addition, there is no "standard" implementation of UEFI and no "standard" way to access the settings (which was also the case with Bios firmware). So the screenshots and key-presses shown in
m654321's tutorial may not be the same as what your computer will show. It would be a good idea for you to learn how to access the settings on power-up and also familiarize yourself with the various screens and options within it. (Use a search engine and look for user manual for your specific computer.)
With that being said, their appears to be a way to tell the computer to boot into the UEFI settings from within Windows 10 -- so you can try these instructions if unsuccessful in figuring out which button to press on start-up to gain access:
How to Access UEFI Settings from within Windows 10.
UEFI-based computers can boot in either UEFI/EFI mode or CSM/Legacy/Bios mode and operating systems can therefore be installed in either mode. There is a (slim) chance that Windows was installed to the new computer in Legacy mode. If that's the case, you don't need to worry about using that tutorial and can install LL fairly simply. So, first thing you should do is
confirm for sure which mode it is installed in. Ideally, you'll want to install LL in the same mode that Windows is installed in for dual-booting to work best.
- Boot with LL dvd/usb, open a terminal and enter this command:
[*]Look for the line "Partition Table = " in the output for the hard drive with Windows on it.
- If it says Partition Table = msdos, Windows is installed in Legacy mode and installing LL will be rather easy. (Post back here for instructions on how to do that.)
- If it says Partition Table = gpt, Windows is installed in EFI mode and you'll need to follow instructions on m654321's tutorial.
Assuming you need to do a UEFI install, basic steps are:
- Make backup copies of anything important in Windows
- Create a Windows 10 recovery usb
- Disable "Fast Startup" in Windows
- Find and disable "Secure Boot" in the UEFI settings
- Using Windows disk management, defragment the "C: drive"
- Using Windows disk management, shrink the "C: drive" to make room for LL installation. (Leave resulting free space "as is" -- don't make any Linux partitions from within Windows.)
- Reboot into Windows after shrinking to make sure it still works
- Reboot with LL dvd/usb plugged in; get into UEFI boot menu and select the boot option for it that is NOT UEFI. (Wording varies, so just pick option that does not say anything about UEFI.)
- Follow steps in m654321's tutorial. (NOTE:You must use a 64-bit version of LL and you'll need a live 64-bit Ubuntu dvd/usb too for the final conversion to UEFI mode.) Basically, you'll be installing LL in Legacy mode first, then converting the install to UEFI mode using the Ubuntu disk.
P.s.
Worst case scenario, if you simply can't get procedure to work with LL, download
Linux Mint Xfce 17.2 (64-bit) and follow
this tutorial to install it in UEFI mode. Tutorial is same for Win 10 as Win 8/8.1. (Functionally, it's very similar to LL and easy to use.)