CEO changes happen. Sometimes, the current head steps down for health or personal reasons. Sometimes, it's merely to give way to a younger generation. But on average, such high-level management shifts usually betray some problem that a company is scrambling to resolve, partly by changing the CEO. When that company is HTC and that CEO is Peter Chou, that might very well be the case. The Taiwanese OEM has just announced that, effective immediately, Ms. Cher Wang will be the company's new chief executive, bring perhaps hopes of a revived HTC.