Can't read battery level
I can't read the battery left in my laptop, when I go into the laptop battery configuration in the control center it say this message: Your computer seems to have a partial ACPI installation. ACPI was probably enabled, but some of the sub-options were not - you need to enable at least 'AC Adaptor' and 'Control Method Battery' and then rebuild your kernel.
Does anyone know how to fix this problem? I have an Elitegroup A531 laptop computer with Mandrake linux official 10.1installed.
It says, rebuild your kernel with ACPI fully enabled, then it will be fine.
How am I suppossed to rebuild my kernal?