How to repair main board Compaq CQ42 dead totally

This video shows how to service the main board of the Compaq CQ 42 laptop totally dead. If all the conditions on the board play normally from the input voltage of 19 volts and the voltage of 3.3 volts with 5 volts are normal, it can be ascertained that the bios problem is corrupt. By flashing the bios or copying the bios, playing this board will return to normal. Good luck and don't forget to subcribers this channel. Thank you