dell chromebook 5190 2-in-1

Dell chromebook 5190 2-in-1 (SF11_CHR_MB 360 17858- 1 3GYOK$AA) HI, I loaded windows 10 to this laptop and couldn't get most drivers and wanted to go back to chrome os, seems bios firmare bricked. I had backed up the stock firmware of which load back into the system but after a restart. it...