Having problems with your Dell Latitude C640 Notebook ?
Dell C640 LCD dims when on battery power
\015 Every time I take the AC cable out the LSD display dims when running on battery power. Is there anything I can do to solve this?\015
When you turn your laptop on press F2 to go to the system settings\015\012Continue to press alt+p till you get to a page about battery usage then turn everything up to max.\015\012\015\012hope this helps
My IBM Thinkpad has separate user configurable settings for power - one when connected to AC and the other when on battery power.\015\012\015\012In order to conserve battery power, the LCD is dimmed and the CUP speed is reduced among other things. These can be changed by the user to behave similar to when connected to AC power with a resulting shorter battery life.\015\012\015\012Check your laptop's user manual to see if they are doing something similar.
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