Microsoft’s Windows 8 offical release will be on 28 October and is mainly targetted as an update from the previous which obviously is Windows 7 what does it boast:-
Its earnings will be offset by a $6.2bn charge.
The company's future efforts are now focused on its upcoming system software release.
Windows 8 includes a touch-controlled interface dubbed Metro as well as a more traditional desktop.
It will be released in a version that runs on ARM-based chips for the first time, as well as versions for x86-based ones designed by Intel and AMD.
Some consumers will have delayed buying new computers ahead of the release, depressing Microsoft's sales in the meantime.
However, many companies have continued with their roll-out of Windows 7 as it typically takes big firms' IT departments months or years after a major system update to approve its installation on workers' computers.
Part of Microsoft's goal in the initial months will be to eat into sales of rivals' tablet computers.
Rory Cellan-Jones tried out Windows 8 when the preview version was released
Apple's iPad and Amazon's Kindle Fire have dominated the sector while Google's new Nexus 7 has also attracted positive reviews.
Microsoft hopes to make the most of the fact that it can offer a single system that can power both desktop PCs and mobile devices - allowing progams to work on both - as opposed to Apple's decision to offer different Mac OS X and iPad iOS systems.
Microsoft has also taken the out-of-character step of announcing its own hardware - the Surface family of tablets - to compete with other companies' products on the Windows 8 platform to maximise its chances.
But since announcing the news chief executive Steve Ballmer has sought to reassure his company's hardware partners, describing Surface as "a design point" that would have a place within a "broad Windows ecosystem".
Whatever the case, investors appear hopeful despite the problems with Aquantive.
"Microsoft's stock is up 17% since the start of the year in part because of anticipation for Windows 8 and Surface," said Colin Gillis, senior technology analyst at BGC Partners.
"We're also still seeing nearly one million PCs sold worldwide a day so that's a sizeable marketplace for them."