Key TakeawaysBest Buy's laptop-computer sales increased 7% year-over-year for the company's latest quarter as people replaced older equipment.But shoppers at Best Buy have cut back on buying home theater equipment and other more discretionary items, the retailer's executives said.Price cuts have helped drive demand at Best Buy, but only by so much, according to Chief Executive Officer Corie Barry. Laptop demand is brisk at Best Buy, but sales are slowing for home theater equipment and other discretionary el ...