Dell put back in top spot

Two-and-a-half-years after handing the chief executive title to his hand-picked successor, Kevin Rollins, Michael Dell is again running the company he founded.

Dell struggled under Rollins's tenure, recently losing its number-one PC vendor ranking to a resurgent HP and weathering a formal investigation by the US Securities and Exchange Commission into its accounting practices.

Rollins resigned his position as CEO and member of the company's board of directors. The board decided that "there is no better person in the world to run Dell at this time than the man who created the Direct Model and who has built this company over the last 23 years," a statement said. Dell remains chairman.

The vendor also warned its most recent financial results would fall below analyst expectations. Its fiscal 2007 Q4 earnings are due on March 1. Rollins joined Dell in 1996 from management consulting firm, Bain & Co. Prior to assuming the role of CEO in July 2004, he had served as Dell's president and COO.