Corporate governance experts have backed Hewlett-Packard's decision to oust its chief executive, as questions emerged about the extent of the ethical lapses that had led to Mark Hurd's departure.

Although the investigation that led to Friday's forced resignation was prompted by an allegation of sexual harassment, Mr Hurd was cleared of the claim by a HP investigation instigated by the company. A lawyer for the unidentified woman and another person close to the situation also said there had been no sexual relationship.

HP said that Mr Hurd's departure was precipitated by “numerous” expense violations, as well as his “close personal relationship” with the woman, who had acted as a marketing contractor to the computer maker. It also alleged misuse of other corporate assets.