While Windows 10 will start rolling out online on July 29, people who don't want to wait will soon have another option. Windows Central has learned that Staples stores in the US will begin offering customers a way to quickly update their old or new Windows 7 or 8.1 PCs to Windows 10 for free, even if the PC was not originally purchased at Staples.

According to our source, who wishes to remain anonymous, Staples stores will perform the upgrade using USB files, rather than online. All stores should be able to handle these offline updates by August 2. Since we don't know yet how long it will take for Microsoft to complete the online rollout for Windows 10, this might be a faster way for users to get their free upgrade, especially if their PCs are not signed up for the Windows Insider program. As with these types of programs, it's best to call your local Staples store ahead of time to find out when they will begin this upgrade offer.

Thanks to our anonymous source for the tip!