PC stuck in bios

[G2H3Ll]

I recently had a sudden problem where whenever I turn my PC on, instead of booting into windows, I am prompted to the bios. I have made sure my drive (MP300) is recognzed, which it is, and tried enabling/disabling secure boot, and some other bios settings, including resetting cmos settings, none of which helped. I resorted to installing a new copy of windows onto my drive by using the Windows media creation tool with a flash drive, which initially seemed to work, as my pc booted into the setup, but after the "Your computer will restart in 10, 9...." message it just restarts the whole process over and I am starring at that purple background where I choose my langauge.

Funny thing is, I tried installing windows on my other ssd on unallocated space (Yes I lost everything), and the same problem of remaining in the bios is still persistent.   

 

Here are my specs:

Asus TUF z370-Plus

i5 8600k

16gb Viper ram

Mp300 m.2

EVO 860

FYI everthing is appearing as it should so this has to be a mobo problem.