While Windows 10 is an excellent operating systems, there are some Windows 7 and Windows 8 users who may want to postpone this process until later.  While Microsoft is encouraging users to move to the improved O/S, the prompt can be easily worked around by simply closing the invitational window for now

http://www.pcworld.com/article/3014238/windows/get-windows-10-prompt-adopts-malware-like-tactics-to-trick-you-into-upgrading.html

Do you want to download Windows 10 now? That’s the question I found myself faced with when I opened an irregularly used Windows 8.1 laptop last night. Once a small box begging for a reservation in the corner of the screen, the “Get Windows 10” pop-up prompt has morphed to consume the majority of the display, and worse, it only presents users with two clear actionable buttons: Upgrade now, and Start download, upgrade later.

There’s no immediate “No thanks” option whatsoever. To be fair, you can still simply close the window using the X in the upper-right corner, and if you click through the itty-bitty inconspicuous chevron on the right-edge of the window there may be a “Nope” prompt somewhere further down the line.

Fortunately, Microsoft says you’ll “be clearly prompted to choose whether or not to continue” installing Windows 10 when that automatic download happens. Here’s hoping there will be a clear “No” option displayed when that happens, at least. Windows 10 is Microsoft’s greatest operating system yet, and a clear upgrade over Windows 8.1—I have it installed on most of my PCs—but strong-arming people with forced downloads and spammer-like no-choice wording on upgrade prompts won’t win Microsoft any fans.

Sick of staring at the update prompt every time you boot your Windows 7 or Windows 8.1 PC? Here’s how to stop the Windows 10 update offer from appearing—at least until the day it’s pushed through as a Recommended update.