Root LG k10 No root, No Recovery, No Fasboot

[Mg977]

Hello I have a few days with the Lg K10 Version 420n with Marshmallov and I do not sew to root, with the commands ADB enters recovery mode but without commands, Android screen exclamation mark, and if I try to enter in fasboot mode the phone is rebooted.

 

[shuu36]

I have a lg k10 k42810f T-Mobile. I can unlock boot loader. However, I cannot find a decent root method! So your title should read no recovery and no root! If anyone has a different root method for this brand of android.......PLEASE...POST!
Any suggestions or methods that may work. Thank you!