Buying a new PC is getting more expensive , and Lenovo says the pressure is not easing anytime soon. The company has begun raising prices in some markets and is warning that a prolonged shortage of memory chips could continue to disrupt pricing and availability well beyond the near term. According to Reuters , Lenovo says rising memory costs are creating real strain on the PC business. Memory chips are harder to secure, and price volatility is making it tougher to plan production. Even where...