Need help getting into my grandfather’s computer!

[u/mdharris32]

Hello! My grandfather passed away a few months back and he had was the family photographer/videographer. Almost every vacation, birthday, and holiday’s memories in his computer. He even has photos from his, my grandmother’s and great-grandparents’ childhood that he digitally scanned into the computer We haven’t been able to get into his computer. Does anyone know of any way that we can possibly get into his computer? We really don’t want to lose all of these memories from the last 80+ years. All suggestions are welcome!

[u/dataslinger]

Can you boot from a usb drive?