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Latitude 3420 cyborg-L14 MB TGL 203068-1

cls not fix this
You need to check the IC if the IC has changed or the motherboard hardware is no longer original, which can also cause this error.
the voltage of motherboard is all present, when i use the original bios the Fan of laptop is not spinning but the voltage is Present, when i use your bios on the top the laptop is working the fan is spinning and the voltage is present,after a couple a second the laptop having a display but its colored and the lights is blinking 3 amber and 6 white it's mean the bios is corrupted
 
the voltage of motherboard is all present, when i use the original bios the Fan of laptop is not spinning but the voltage is Present, when i use your bios on the top the laptop is working the fan is spinning and the voltage is present,after a couple a second the laptop having a display but its colored and the lights is blinking 3 amber and 6 white it's mean the bios is corrupted
try more bios on top
 
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