dell latitude 3420 bios problem

#1
Laptop Model
dell 3420 cyborg-L14 mb 203068-1
hi there , have dell latitude 3420 which has mdm , thought i can edit the bios to get rid of mdm, but didnt work , flashed the chip with original backup dump , but the laptop starting to give solid colours but not booting, downloaded a random file from internet which helped the laptop to boot but not charging and working when the battery is disconnected, with original backup dump is coming on with charger only but not booting, is there anyway to fix it?
 

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