FILE-This Tuesday, Aug. 21, 2012, file photo, shows an exterior view of Hewlett Packard Co.'s headquarters in Palo Alto, Calif. The PC business is faltering amid shifting technology trends since Apple Inc. shifted the direction of computing with the release of the iPhone in June 2007. HP's market value has plunged by 60 percent to $35 billion, while Dell's market value has also plummeted by 60 percent, to about $20 billion. (AP Photo/Paul Sakuma,File)