Microsoft will no longer release security and bug fixes for Windows 7 and Windows 2008 R2 starting January 14th, 2020. We recommend all clients to upgrade to a supported operating system. Windows 10 for desktops, and Windows 2016 or 2019 for servers.
Please contact TR Computer Sales with any questions upgrading your network, or replacing hardware before January 14th, 2020.
For reference, visit the Microsoft fact sheet here: https://support.microsoft.com/en-us/help/13853/windows-lifecycle-fact-sheet