HP has debunked claims made by analyst outfit IDC, and has said that Windows 10 could have what it takes to boost PC sales.
IDC said last week that Windows 10 is unlikely to save the struggling PC market, which is expected to shrink by 6.2 percent in 2015, claims which HP has since dismissed.
Mike Nash, vice president of product management for consumer PCs and solutions at HP, said: "Installing the operating system is a good way to demo the product, but the features may inspire users to go out and buy a new PC.
"There's 604 million PCs out there that are more than six years old, so hopefully Windows 10 will be the thing that makes users go out and buy a new one."
When quizzed as to what improvements Windows 10 offers over Microsoft's heavily criticised Windows 8 release, Nash said: "The biggest challenge with Windows 8 is that it was essentially two operating systems - desktop and Metro - and the lack of start bar made it very confusing and uncomfortable to use.
"The most important Windows 10 feature is that that the Start Menu is back, and that it is designed for keyboard and mouse users. When I go to Windows 10 I don’t have to think. That makes it a much easier transition."
It's an easier transition than with Windows 8, but IDC said that Microsoft's offer of a free upgrade won't have a positive effect on PC sales.
Microsoft has confirmed that Windows 10 will be available as a free download from 29 July to anyone with a Windows 7 or Windows 8.1 machine. The free download will be on offer for one year.
Reports emerged over the weekend suggesting 29 July as the launch date for the upcoming OS. Microsoft has since confirmed this in a blog post, written by Terry Myerson, Microsoft's vice president of Operating Systems.
"If you purchase a new Windows 8.1 device between now and then, the Windows 10 upgrade will be available to you and many retail stores will upgrade your new device for you," he explained.
This means that, while IDC expects Windows 10 to be a "significant contributor" to PC shipments, it won't do enough to have a major impact on faltering sales worldwide.
The PC market saw a slight boost in mid-2014 when end of support for Windows XP boosted demand for replacements, but IDC said that the market will see a big decline in 2015.
The analyst firm noted that, while businesses will purchase PCs running Windows 10, consumers will not be as likely to buy a new computer because Microsoft will provide them with a free upgrade to the new operating system as long as they are running legal versions of Windows 7 or Windows 8.
Consumers will also "continue to prioritise" spending on smartphones, tablets and wearable devices such as the Apple Watch.
Loren Loverde, vice president of Worldwide PC Trackers at IDC, added that it will also take time for Microsoft to convince users of the benefits of Windows 10, saying: "Microsoft and PC vendors still need to convince users of the advantages of the new OS and new PCs, which will take some time.
"In addition to educating clients, they'll face tough competition from other devices, and weak spending in many regions. As a result, we see PC shipments stabilising in 2016, followed by limited growth for the next few years."
However, while Windows 10 won't have much of an impact in the coming months, IDC expects PC shipments to stabilise in 2016 "followed by limited growth for the next few years."
While the PC market is expected to see an overall decline in sales of 6.2 percent in 2015, this is slightly less than the 7.7 percent drop IDC reported in the first quarter of this year.
IDC blamed this drop on the slowdown in the number of businesses upgrading from Windows XP, which hit end of life status a year ago last week, along with a "drop in enterprise demand".
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