Microsoft and Hawking Reboot

Listen up, buttercup. This joke is playing on words. "Reboot" is a computer term for restarting. Stephen Hawking used computer systems to communicate. The joke implies Microsoft couldn't 'reboot' him, as in, they couldn't fix his communication system or bring him back to life, you simpleton. Microsoft is big tech. You wouldn't know that because you are likely still rocking Windows 95.