Hewlett-Packard on Thursday named former eBay chief Meg Whitman its new president and chief executive officer, replacing Leo Apotheker at the helm of the world's biggest computer maker.

Whitman, 55, stepped down in 2008 at eBay, the Internet auction giant, and last year made an unsuccessful run to replace Arnold Schwarzenegger as California governor, losing to Democratic veteran Jerry Brown.

"We are fortunate to have someone of Meg Whitman's caliber and experience step up to lead HP," said Ray Lane, who was named executive chairman of the computer giant.

"We are at a critical moment and we need renewed leadership to successfully implement. Meg is a technology visionary with a proven track record of execution."

Among the changes at HP, Ray Lane has moved from non-executive chairman to executive chairman of the board of directors, and the board intends to appoint a lead independent director, a company statement said.

"These leadership appointments are effective immediately and follow the decision that Leo Apotheker step down as president and chief executive officer and resign as a director of the company," the California group said.

In the statement Whitman said, "I am honored and excited to lead HP. I believe HP matters -- it matters to Silicon Valley, California, the country and the world."

The shakeup comes with HP struggling for direction despite its leadership in the PC business.

Katy Huberty, an analyst at Morgan Stanley, said the change was "a step towards regaining credibility with investors" but warned that "the path to a full recovery of investors' faith in management and the company's earnings power will take several quarters, if not longer."

Apotheker, a veteran of German business software giant SAP, took over HP in November and has been refocusing the company on software and cloud services -- offering applications and storing data services over the Internet.

But HP shares have fallen more than 40 percent since Apotheker replaced Mark Hurd, who resigned following a sexual harassment accusation.

HP shares plunged 20 percent on a single day last month after Apotheker announced a dramatic strategic shakeup at the world's top personal computer maker that includes spinning off its PC business.

HP announced on August 18 it was exploring a spin-off of its PC unit and buying British enterprise software company Autonomy for $10.24 billion as it refocuses on software and technology solutions.

In a further move away from the consumer space, HP said that it was stopping production of its TouchPad tablet computer, its rival to Apple's iPad, and phones based on the webOS mobile operating system acquired from Palm last year for $1.2 billion.

HP began laying off employees in its webOS unit on Tuesday.

Forrester analyst Frank Gillett said earlier Thursday that HP's "strong customer brand is being damaged" by uncertainty aboot the direction of the company and its leadership.

"The company is in a difficult strategic position. It might undo the planned PC spinout, but only if they value the supply chain synergies," he said in a note to clients.

"The company has a long shot possibility to become a leader in enterprise cloud as an anchor of a larger ecosystem of products and services."