https://www.amazon.com/Hammond-Flux-Life-After-Flesh-ebook/dp/B01M7ZIWOU
When Professor Hammond Hinkley loads his mind onto a super computer he gives rise to a new and frightening version of himself, Hammond Flux. Isolated in a virtual world created from his own imagination and memories his ambition turns to megalomania, leading to mischief, mayhem and murder. Human Hammond must face up to his warped digital duplicate if he is to stop the world sliding into the abyss.