Screen colors change and switches from dim to bright

Try restarting it

you need to run another cable to frame of car or fix existing one you have a bad ground to chassis

The CCFL lamp maybe faulty or the wires from the inverter to the CCFL lamp may be loose or need re-soldering.

boot to the BIOS (F2 at boot) and ensure that the LCD brightness is set to 8 and then reboot, if LCD is still dim, then, check the Control point system manager display settings and see if the LCD is dimmed there.
If no change, run diags Power + D at boot to run the LCD BIST test , if the 4 colored screens are DIM during the test, then the LCD has failed and needs repplacement.

hi,
change the brightness button of your monitor. you can find that button on your monitor. it has a "sun" icon, then change to your desired brightness.

Follow the 2 steps I follow all the time, retry, and restore your ipod. My itouch's screen was also really dim but when i restored it, it turned bright.

try to degus the monitor

YOu can go to the monitor settings to make sure nothing's been changed. It could be an energy saver issue where the display dims after a certain period of time, and you can reset it to longer period of time so it would stay bright for you

Most likey the dim screen while running on batteries is the power saving feature. This can be changed in the operating system configuration. Assuming you have Windows, you should be able to right click on the desktop, click Properties then the Screen Saver tab. I have a desktop so I won't see the same details as a laptop. Just go to the appropriate settings & change them to give you higher performance for use with the battery. You may also be able to adjust the brightness with the Function key & another key combination. Look at the blue or green colored silkscreening on some of the keys on your keyboard & maximize the brightness while running on batteries only. Next time you reboot, it should remember your previous settings. Hope this works for you.

I think its just like driver problem or you adjust the color in under advance button in the screen and resolution setting
takecare