100% CPU usage when on battery

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freitasm

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#74503 31-Dec-2010 20:22

I've noticed something on my HP dv6 laptop for a while: when I unplug the power cable the CPU utilisation goes to 100% and stays there. I can't pinpoint any application using this much CPU.

Everything goes very slow, and sometimes plugging the power cord back brings CPU utilisation down again.

Any ideas?

gzt

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#429479 21-Jan-2011 11:16

This Mark Russinovich post might be helpful when tracking it down. Trying a different battery might be interesting if you have one around.

gzt

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#429483 21-Jan-2011 11:21

and: Windows 7 100% CPU usage on H-P Dv6

freitasm

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#429484 21-Jan-2011 11:23

Yes, I found that running on a Power Management set that had an On Battery set lower than 75% would cause this. I had since changed that set to 75% and it runs ok now.

Obviously Power Management causing CPU to slow down and Windows 7 not liking it...

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