Step 1: Click the Start Menu and type DCCW. Hit Enter.
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The Display Color Calibration utility is starting.
If you need to perform a full calibration, dim the lights in your room to create proper calibration conditions.
Click Next.
Step 2: On the instructional menu about Gamma, read the information and click Next.
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Adjust the Gamma of your video card to your liking.
Click Next.
Step 3: At the introductory menus on brightness and contrast, read the information and click Next two times.
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If your computer monitor presents outer controls, you can now adjust them as per screen instruction.
Click Next.
Step 4: The next set of menus offer you the possibility to set the contrast in the same manner. Adjust and click Next.
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At the end, you are offered the chance of changing brightness of the individual red, green and blue colors.
Result: You have successfully changed the brightness of your screen.