laptop black screen display, power light and fan are working and tried drain process and ram check

[vijaypatida]

tried every mtd avalible on the net . drain the laptop, and check the ram , and also with the external display monitor . what else will be the problem or the boot manager is lost. need help

 

[hang-the-9]

If neither the laptop screen nor an external monitor work, most likely issue is a dead motherboard.