For goodness’ sake, please upgrade to Windows 10. I get it, you don’t want to deal with any potential bugs and issues that may arise when upgrading, but you can always do a clean install of the operating system (backup your data first, of course) and start 2018 with a clean slate and an even cleaner hard drive. Remember, after December 31, you’ll have to pay for Windows 10, and who wants to do that?