HP (Hewlett-Packard) 2307890A ユーザーズマニュアル

To adjust the video settings from the Windows desktop:

Right-click on the desktop, and click NVIDIA 
Control Panel in the dialog box. 

When NVIDIA Control Panel window opens, click 
the Video & Television category.

Select Change the signal or HD format.

Select your options

Select the display you want to change.

Select the connector you want to use.

Select the signal format to a type that is 
supported by your TV. (For commercial DVD 
playback in component video, select: 480i or 
480p.)

Click Apply and then click Yes to save changes.

Click the Home icon 

 in the taskbar.

Click the Video & Television category.

If you are using a Component Video Out connection 
with your display, select Adjust television color 
settings. Move the Brightness and Contrast slider 
bars to adjust the color settings. 

If you are using a VGA, DVI, or HDMI Video Out 
connection with your display, select Adjust video 
color settings. Move the slider bars to adjust your 
color settings.

Click Apply.

Close the Adjust Video Color Settings window.