Every computer monitor has a different color signature. Modern laptops and all-in-one computers are pretty good out of the box, but they usually add some extra punch that is not really in the actual file. If you want to see the most accurate reproduction that your monitor is capable of, you need to make a custom profile that compensates for the specific color cast of your monitor and the monitor driver settings.
A monitor profile is created by measuring the color output of your monitor across a range of colors and brightness. A piece of software then creates a profile and uses it to adjust the color of the display. Datacolor and X-Rite both make devices and software to profile your monitor.
High-end graphics monitors may also allow for actual calibration, where an internal program changes the settings of the monitor to be as close as possible to a reference standard. Most of these monitors come with their own dedicated measuring devices.