HP's cast of characters

With four CEOs in a decade, three chairmen, and a rotating array of directors, HP has repeatedly tumbled into turmoil. A guide to the key figures.

Carly Fiorina
CEO 7/99 - 2/05

Mediagenic and a strong marketer, Fiorina bought Compaq for $24 billion, arguing HP would win by being No. 1 in PCs. But she was weak as an operating executive, and the board ousted her.

By James Bandler with Doris Burke @FortuneMagazine - Last updated May 08 2012: 6:40 AM ET
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Top 50

Exxon Mobil knocks Wal-Mart from the top spot. Who else made the top 50 this year?