Windows 8 has a much more tablet-friendly style. Photo: AFP
One of the ads introduced the new operating system, another emphasized on personalisation, a third covered all the apps and the fourth one focused on work.
Microsoft has designed Windows 8 to work on a range of devices, from laptops to tablets, and it has two distinct modes.
According to the report, the first, using Microsoft 's tiled interface, previously known as Metro, works in a similar way to the user interface on Windows Phones.
The second mode resembles the more traditional Windows desktop .
Users can switch between modes for different tasks, but some have found that confusing.