You didnt told Virus that you are getting a new computer and not going to download him and once you thought its over.Your computer turned on by itself and a hand grabbed you dragged you inside the computer allowing you to enter in the game.

"0h,That's what you're doing to m3?i th0ught we're fri3nds..YOU S1ID WE'RE FRI3NDS!"

He snapped in anger and glitching a lot from all this sadness and anger you know by now you are gonna be stuck here with him,forever.