Grainy colors on photos or graphics due to video driver resolution.
Cause:
The color resolution, set by the video driver, and the video card, determines the number of colors to be displayed. Older video cards display 16 or 256 colors. Viewing high quality photos or graphic images requires a video card generating 65,000 colors (16-bit) or 16.7 million colors (24-bit). This video driver or video card does not generate enough colors.
Solution:
Increase video resolution (increase the number of colors) by switching video drivers (within the limits of the video card and display unit) or upgrade to a more powerful video card and display unit.
1) Try increasing the number of colors displayed by selecting a different video driver (if possible). Do one or both of the following:
a) Check or change the Windows video driver:
1] Right-click on the desktop.
2] Select 'Properties' from the pop-up menu. (The 'Display Properties' dialog box appears.)
'Display Properties' dialog box
3] Click the 'Settings' tab.
'Display Properties' dialog box 'Settings' tab
4] Click 'Change Display Type'. (The 'Change Display Type' dialog box appears.)
'Change Display Type' dialog box
5] Do one of the following:
a] Change the video adapter:
1} In the 'Adapter Type' group in the 'Change Display Type' dialog box, click 'Change...'.
'Adapter Type' group
2} From the 'Select Device' dialog box, select an appropriate video driver (one which support more colors) from the 'Models' list box.
3} (Optional) Insert the manufacturer-supplied diskette in the diskette drive and click 'Have Disk' .
a} Type the letter of the drive the disk is and the command to start the installation program.
NOTE: Consult the documentation that came with the video adapter for the correct installation command.
b} Follow the on-screen instructions to install the desired driver from the manufacturer-supplied diskette.
4} Click 'OK'.
5} Click 'Close' to return to the desktop.
b] Change the monitor type:
1} In the 'Monitor Type' group in the 'Change Display Type' dialog box click 'Change...'.
'Monitor Type' group
2} From the 'Select Device' dialog box, select an appropriate monitor (one that supports more colors) from the 'Models' list box.
3} (Optional) Insert the manufacturer-supplied diskette in the diskette drive and click 'Have Disk' . (The 'Install From Disk' dialog box appears.)
a} Type the letter of the drive where the disk is and the command to start the installation program.
NOTE: Consult the documentation that came with the video adapter for the correct installation command.
b} Follow the on-screen instructions to install the driver from the manufacturer-supplied disk.
4} Click 'OK'.
5} Click 'Close' to return to the desktop.
