How do I put Ubuntu onto a Lenovo Yoga X380 computer, BIOS: Roset49w(1.33) & get rid of Windows 10?

Can anyone help please?
I can’t even get to go into the trying Ubuntu mode.
There problems are two fold.
1. Seems to have some kind of child lock on it, so certain programs just can’t be opened; G-Parted for instance. It says that it’s a trojan, and I can’t seem to talk it into ignoring this judgement.
2. Appears to not want to boot from a flash drive and the boot order selector doesn’t seem to do anything.

source
ubuntu