Mr. Gates repeatedly received an error message informing him that his PC ran into a problem that it could not handle and needed to restart.
Quick, to the escalation engineers! :grin1:
On a serious note, it mentions upgrade, therefore his upgrade from to 7 > 8 and/or 8.1, he likely had something that was not complying with the upgrade, or wasn't compatible. The most common in these situations is an antivirus, which you should always
uninstall before performing an upgrade. Although this was a problem attempting to be tackled by two obviously very well-versed gentlemen, even the smartest people can overlook the simplest things.
Edit: I stood in the shower and thought to myself there's a 99% chance this is satirical.