The movie shows an disassembled notebook and just an motherboard…
Does the notebook pass the POST (power on self test) properly??
Can you see an Toshiba Splash Screen???
Are you able to access the BIOS?
If mentioned things are not possible or don’t work, then an motherboard problem (generally speaking) causes this… sorry to say this but I think that only an technician could who tested the hardware parts would be able to provide more details about the possible faults.