1. Limit startup processes
A lot of programs install side processes that run every time you turn on your PC, and some of them are not required all the time, so it's better to limit them. Via task manager, you can disable them easily.
2. Uninstall Crapware
There are some preinstalled software installed by PC makers continues to be an issue with new computers. Uninstall the unwanted software that you are not using anymore.
3. Clean Up Your Disk
Regularly clean up your drives as they store temporary files, recycle din data, offline Web pages, delivery optimization files, and thumbnails.