An anonymous reader writes: The Blackstone Group has notified Dell's board that it has ended its bid for the company after performing 'due diligence' on Dell's books. The private equity firm gave two reasons for its withdrawal in a letter to the special committee of the board reviewing privatization offers: the 'unprecedented 14 percent market decline in PC volume in the first quarter of 2013' and 'the rapidly eroding financial profile of Dell'. IBM's recently announced intention of withdrawing from the x86 server market may have also spooked investors. Blackstone was one of two outside bidders that emerged after founder Michael Dell and Silver Lake Partners announced a deal to take the company private for $24.4 billion. The remaining bidders did not comment on Blackstone's withdrawal; however, the Bloomberg piece notes that Dell's original deal with Silver Lake Partners contains language preventing the latter from backing out. Management's take on Dell's latest quarterly earnings report here.