Beyond Windows 8, a recovery in PC sales will depend on the success of thinner and lighter PCs, including products with tablet-like features such as touchscreens, instant-on and longer battery life.

"Revival of the PC market will have to be linked to the way people look at the next generation of PCs," Daoud said, adding that ultrabook prices will need to come down.

Today, ultrabook prices start at about US$600 and reach more than $1,000 for some models. Intel, the primary backer of ultrabooks, has said prices will come down in future years.