Toshiba Satellite L840 boot from external disk without internal HDD
Note: The laptop I need assistance for is an L840, not the computer chosen above.
This may be a unique case, however, this computer was salvaged from a recycling bin for electronic parts. The previous owner (I'm assuming) has taken out the battery and HDD on the computer.
Thus, when I try to power on this laptop up, it refuses to boot up. The screen is blank, after 5 seconds or so after I turn it on the fan will blast at full speed, and the air released is moderately warm.
What I am trying to attempt is to boot the laptop from an external hard drive. However, I have yet to rule out if the computer even works in the first place.
Can someone help me find out if the computer works, and if I can even boot this computer from an external disk without the HDD?
Link (picture of internal)
Is this a good question?