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CPU runs at 100% when on battery. Why?

by smartinez281 / November 3, 2008 12:52 PM PST

So I have an HP Pavilion dv5217cl(Laptop)
Win XP
Processor- AMD Turion 64 ML-34

My laptop runs fine when I have it hooked to the charger, but whenever i unhook the charger and just run on battery the cpu usage goes up to 100% on multiple occasions.
Is it because this is a new battery?
I have ran trough various Anti Virus and Spyware programs but they have not helped.
When I had the original manufacturer battery, I did not have this type of problem. I was reading on some forum not to long ago that I need to adjust my BIOS.

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by JP Bill / November 3, 2008 1:08 PM PST

Did you open Task Manager, and look in the Processes Tab, and see which Process is using the CPU?

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If You Know The CPU Is At 100%, Which Program???
by Grif Thomas Forum moderator / November 3, 2008 1:11 PM PST causing it to peak.. The Task Manager should identify which specific program is causing the problem..

Or do you simply mean the computer slows a great deal when it's on battery? If that's the case, you can change the emphasis from battery to performance, or from performance to battery by checking in the Power Management section of your Display settings.

Hope this helps.


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by smartinez281 / November 3, 2008 1:18 PM PST
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by smartinez281 / November 3, 2008 1:20 PM PST
In reply to: REPLY
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by JP Bill / November 3, 2008 1:46 PM PST
In reply to: UPDATE
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Strange That Firefox Is Running So High.. Does ??
by Grif Thomas Forum moderator / November 4, 2008 1:49 AM PST
In reply to: UPDATE

...Doe Firefox also show high CPU if you close Firefox? If so, then I would certainly follow the steps provided by JPBill above and if that doesn't help, try uninstalling, then reinstalling FF.

Another possibility would be malware.. If you haven't use the Malwarebytes scanner, please try using the instructions below to run a scan with the free tool listed:

Please download Malwarebytes' Anti-Malware from the link below:

Double Click mbam-setup.exe to install the application.

* Make sure a checkmark is placed next to Update Malwarebytes' Anti-Malware and Launch Malwarebytes' Anti-Malware, then click Finish.
* If an update is found, it will download and install the latest version.
* Once the program has loaded, select "Perform Quick Scan", then click Scan.
* The scan may take some time to finish,so please be patient.
* When the scan is complete, click OK, then Show Results to view the results.
* Make sure that everything is checked, and click Remove Selected.
* When disinfection is completed, a log will open in Notepad and you may be prompted to Restart.
* The log is automatically saved by MBAM and can be viewed by clicking the Logs tab in MBAM.

Extra Note:
If MBAM encounters a file that is difficult to remove,you will be presented with 1 of 2 prompts,click OK to either and let MBAM proceed with the disinfection process,if asked to restart the computer,please do so immediately.

Hope this helps.


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CPU runs at 100% when charing my battery. Why?
by markypogi / July 14, 2010 12:45 AM PDT

Has this been solved? I'm having a similar problem! Only the other way around... My laptop's CPU runs at 100% when I plugin my charger!

From an average of 95% utilization, it drops to 3% when I remove my charger!

laptop model: HP Compaq 6510b, WinXP SP2

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