By Nadia Damouni, Nicola Leske and Edwin Chan NEW YORK/SAN FRANCISCO (Reuters) – Two of Hewlett-Packard Cos most powerful executives, until they were sidelined by CEO Meg Whitman, are preparing to leave the company in the coming weeks, several sources say. Todd Bradley and Dave Donatelli have been interviewing for potential jobs for several months, four sources familiar with the situation said. Former PC chief Bradley and ex-enterprise group chief Donatelli, once rising stars at the computing giant, are now waiting for restricted stock to vest under the undisclosed agreement. Donatelli is expected to remain with HP until March, receiving $8 million to $10 million, the sources said.