The window at the Currys & PC World store on Tottenham Court Road, London, will be transformed into a 60-inch interactive Windows 8 touchscreen for the exclusive opening at 00.01 on October 26.
Customers queuing up for the launch will be able to interact with the display to see how the Windows system has evolved for the latest iteration, and then buy the software or compatible machines after they go on sale at midnight.
Windows 8 represents one of the biggest ever revamps of Microsoft's operating system. Running on PCs, laptops and tablet computers, the software has adopted the 'Live Tiles' format used on Microsoft's Windows Phone system. Users also access the traditional desktop view.
Microsoft has high hopes that the operating system will kickstart the sluggish PC market, as well as boost its profits after a disappointing set of results in the previous quarter.
It is thought that many consumers have been holding off on buying a new PC as they wait for Windows 8 to launch. The software is also designed to compete with Google's Android and Apple's iOS operating systems in the tablet market.
Alongside a range of Windows 8 partner manufacturers, Microsoft is also launching its own line of hardware for the first time in the shape of Surface tablets. They will go head-to-head with Apple's iPad on October 26.
For the launch event on Friday, Curry's & PC World has teamed up with HP to offer a range of one-night-only discounts for customers on new laptops.
This includes the HP Pavilion G6 E2 with 6GB of RAM and a 750GB hard drive for £249; the HP Envy A6 with 4GB RAM and 500GB of memory down £150 to £349; the Envy M6 i5 with 8GB RAM and 1TB memory with £300 off at £399; and the DV7 i7 with 6GB RAM and 1TB of memory with £400 off, down to £599.
The first 300 customers who buy a Windows 8 HP product will also get a free pair of Beats Solo headphones worth approximately £150, and be entered into a prize draw to win an all-expenses trip to either Paris to see No Doubt in concert, or Frankfurt for the MTV European Music Awards.
Currys & PC World also intend to offer those who brave the autumn weather to queue up for the midnight launch teas, coffees, doughnuts and sausage rolls while they wait.
US magician Daniel White will also entertain them with "a specially designed array of computer related magic tricks".
Ben Lovett, spokesperson for Currys & PC World, said that the retailer is expecting a long queue awaiting the launch of Windows 8.
"This is a major new development in computing technology and we are expecting really strong sales of Windows 8 products in the run-up to Christmas and beyond," he said.
"With such fantastic launch offers from HP, the team at our Currys & PC World store on Tottenham Court Road is anticipating a long queue outside the store throughout Thursday evening in the run up to the 00:01 opening on Friday, October 26."