Humming sound coming from power supply after new battery update?!

i've heard of MB whining.. but not power supplies...
it's new with the latest battery update.
it stops when i touch the power supply.
it also stops when the processors rev up.
is this normal??
it's annoying as ****, and it never used to do it.
any help will do.

Hi, Dan:
I don't have your model PC, so here are some generic instructions.
Turn on the PC and at the beginning of the HP welcome screen, tap the F10 key to gain access to the BIOS.
There should be a menu to Save Defaults and Exit, when you go to exit the BIOS.
That is all there is to it.
I can't find your model number to give you the link to the audio driver from the support and driver page.
If you have the IDT audio chip, below is the latest driver for it.
Or let me know what model audio device you have and I'll see what I can find if it is not the IDT audio.
http://h10025.www1.hp.com/ewfrf/wc/softwareDownloadIndex?softwareitem=ob-102404-1&cc=us&dlc=en&lc=en...=
Paul

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