Microsoft's Windows operating system allows PC users to adjust the screen resolution, to ensure text and images are displayed clearly and sharply. At higher resolutions, items will appear sharper but they'll also be smaller so you can fit more on your screen. Meanwhile, at lower resolutions, icons will appear bigger, which is great if you suffer from eyesight problems.
It's very easy to adjust the resolution in Windows 7, through a few simple steps taken in the Control Panel, and Windows will even preview what you're display will look like before you apply the changes, ensuring you can see whether the resolution is suitable for your or not. However, it's worth noting that your display will have a maximum resolution, so you may not be able to set the resolution at exactly the one you wanted. Furthermore, they'll always be a recommended resolution based on your display, and its preferential to use this.
From the Start Menu, select Control Panel.
Under Appearance and Personalization, select Adjust screen resolution.
If you're using multiple displays connected to your PC (see How to add a second screen to your PC or laptop for more information) then use the drop down monitor to select the display you want to adjust the resolution of. If you only have one display, there won't be any others listed in the drop down menu.
Now click the drop down menu next to Resolution, which is located underneath the Display drop down menu. Use the vertical slider to select the resolution you want.
You can also change the orientation of the monitor if you need to using the third drop don menu.
Press Apply and then OK to close the window.