PCs running Windows 10 from Dell, HP and Lenovo will be on sale from 29 July

Personal computers running Microsoft's Windows 10 will be available at stores from 29 July, the day the technology giant plans to roll out its new operating system.

Among the brands likely to be on sale right at the outset include Dell, Hewlett-Packard, Lenovo and Acer, Microsoft told Bloomberg in an emailed statement.

The final version of the operating system (known as RTM) and which will be sent to manufacturers, is not yet ready, despite the launch date being just two weeks away.

The company, which recently suspended availability of the preview builds, has said that Windows 10 will be available in 190 countries as a free software upgrade and with new PCs and tablets.

'Upgrade Your World' is the slogan Microsoft is using for its global advertising campaign for Windows 10. The campaign will kick off on 20 July in the US, followed in other countries on 29 July.

Microsoft says it has partnered with 10 global and 100 local non-profits at a cost of $10 million to help users upgrade to Windows 10.

Global celebration

For the over five million users who are a part of Windows Insider Program with access to pre-release software, Microsoft will hold a special event in 13 cities around the globe including Sydney, Tokyo, Singapore, Beijing, New Delhi, Dubai, Nairobi, Berlin, Johannesburg, Madrid, London, São Paulo, and New York City.

The event will offer hands-on opportunities, experimental demos and the chance to interact with the Windows team. A date for the event has yet to be set.

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