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Accelerate Your PC (Windows and Mac) Windows: Clean Up Your Disk: To get rid of junk on your system and temporary files, search for Disk Cleanup in the Start menu. Disable Startup Programs: To disable unnecessary programs at startup, open Task Manager by pressing Ctrl, Shift, and Esc. Select the Startup tab. Defragment Hard Drive (HDD only): To optimize your HDD, type "Defragment" into the Start menu. Note that SSDs do not require defragmentation. Mac: Free Up Storage: Go to About This Mac > Storage > Manage to remove large files or unused apps. Close Unnecessary Background Apps: To open Force Quit Applications and close applications you aren't using, press Command + Option + Esc. 2. Shortcuts for Productivity on the Keyboard Windows: Alt + Tab: Switch between open apps. Win + D: Show/Hide Desktop. Lock your computer with Win + L. Ctrl + Shift + Esc: directly open Task Manager. Mac: Switch between apps by pressing Command and Tab. O...