When a computer is only in the BIOS it is under the least amount of load but when it is in use more demands are placed on it so weak components can fail, what the inverter does is control the amount of power that the backlight receives and so if the inverter board/connections is/are bad it cannot regulate the power correctly.
Do you think there may have been damage, or anything indicating problems I may have missed? I moved it around a little, made sure it was properly seated, made sure the cables were properly connected, would there be any obvious sign of damage?
Kind of grasping at straws here, but I don't want to miss anything.