In Windows 8 and 10, open the task manager, then select the Startup tab. On Windows XP, Vista, and 7, open command prompt, then type “msconfig”. Once msconfig opens, then select the Startup tab. CCleaner also has a feature that allows you to do the same thing (Tools—>Startup)

For Windows, select Performance and Maintenance and then choose “Rearrange items on your hard disk. . . " and “Free up space on your hard disk. " For Mac, go to the Applications Folder, select Utilities Folder then launch Disk Utility.