Microsoft will cease support for Windows 10 after October 14, leaving users without updates, technical assistance, or security fixes. An estimated 240 million older computers cannot run Windows 11, prompting Microsoft to encourage recycling those machines. Users can check compatibility using the “PC Health Check” utility. If a PC is incompatible, recycling is advised, with many centers available in the U.S. Some retailers offer trade-in programs for older computers. Continuing to use Windows 10 after the deadline poses security risks, and Microsoft recommends disconnecting from the internet if users keep their older PCs. Buyers of used PCs should verify compatibility with Windows 11 before purchase.