Disclosure: Boing Boing earns a commission on purchases made through links in this post. TL;DR:  Windows 11 Pro  upgrades older PCs with modern multitasking tools, stronger security, gaming enhancements, and integrated Copilot AI features, now discounted to $9.97 (reg. $199). It feels like Windows 10 just arrived yesterday, yet Microsoft has already ended support for it. That has created a very specific modern problem: millions of perfectly functional computers suddenly feeling technologically abandoned. If your laptop has started feeling sluggish and outdated,  Windows 11 Pro  is designed to make it feel modern again. Right now, it's on sale for $9.97 (reg. $199). Some PCs don't necessarily need replacing so much as digital rehabilitation. Windows 11 Pro adds  modern security, faster multitasking, a cleaner interface, and smarter productivity tools  that can make aging hardware feel significantly less frustrating to use day-to-day.…