Installing on a Dell 13-5368 Laptop?

[m654321]

Returning to your booting problem with your new UEFI laptop ...

Like you, I had problems dual-booting either LL3.0 or LL3.2 with Win10 (HE & Pro versions) on my UEFI laptop (Asus G750) in Legacy/CSM mode.

I remember previously, having a similar problem dual-booting LL3.x  with Win8.1:  it's notable that I eventually got that setup working in Legacy/CSM mode by removing the SSD, and going back to using an HDD.
I might be mistaken, but my experimentation seemed to suggest that when an SSD is used with a UEFI laptop, it expects UEFI support to come with the Linux distro you want to dual-boot with. 

If you want to dual-boot on a UEFI laptop, with Windows OS, I strongly recommend you try a distribution package that comes with UEFI support. In that regard, you can't go wrong with Linux Mint - it's a mature distribution.
I've found it to work flawlessly on my UEFI laptop, dual-booted with Win10, with UEFI and Secure Boot fully enabled.  I still run LL3.2 on this PC but only as a virtualbox guest on the Linux Mint host. When Jerry has reached a stage where he's ready to officially release LL with UEFI support (if that's the case), then I'll return to dual-booting with LL on this laptop (setup1 in my signature below).

In passing,  I should mention that a  LL3.2 UEFI test build does exist: linux-lite-3.2-uefitest1a-64bit  version, available at http://repo.linuxliteos.com/uefitests/3.2/
I did try dual-booting it  with Win10 on my Asus G750, but didn't have luck with this and details of the problem were reported in post #106 at https://www.linuxliteos.com/forums/linux.../#msg29172

However, some others on that thread seemed to have had more luck than myself - it might be worth you having a go too, before trying something like Linux Mint, etc ...

All the best
Mike