Here are several opinions regarding what was wrong with Fiorina as a CEO at HP. The Fortune article points out the ways she “improved HP” were not of consequence. The Politico article gives more details, plus 4 character/personality flaws which she has made no change in since she was fired at HP.
https://fortune.com/2015/09/21/carly-fiorina-hp-ceo-business-record/
https://www.politico.com/magazine/story/2015/09/carly-fiorina-ceo-jeffrey-sonnenfeld-2016-213163
Thanks gleeaikin.