I also think you have some sort of a 3rd party (possibly from HP) running in the background, also possibly as a service, that is overriding the power settings you're manually changing.
Could you attach your HijackThis log to your next post please? Also as Judy mentioned, if this laptop didn't originally come with the Media Edition, then the mobo BIOS and the OS might be having some sort of a conflict on the power (APM) settings.




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