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I like to slightly under-clock my processor to keep it cool. I use the following setting :
enter image description here
But while playing games(usually for 4-5 minutes) the settings automatically jump back to 100%. enter image description here
I have also tried making a new power plan but same thing happens. My processor is Amd anthlon X2 4600(2.4 GHz) and OS is Windows 7.

Why is processor state automatically changing and how to prevent it ?

Serious
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  • Try using the *Power Saver* profile. – James P Jul 06 '12 at 12:54
  • @James Tried that already. Same behavior, both processor sates jumping back to 100%. – Serious Jul 06 '12 at 13:03
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    Do you have the Catalyst control centre installed? Try closing it. Someone else had a similar problem: http://www.vistaheads.com/forums/microsoft-public-windows-vista-performance-maintenance/180652-power-options-keeps-resetting-upon-startup.html – James P Jul 06 '12 at 13:17
  • @James It is working for now. Please post it as an answer. – Serious Jul 06 '12 at 14:18

3 Answers3

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Im not really sure, but I think that means that's using the 100% of the 85% of your assigned processing power.

Rhyuk
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  • +1 for that; if these settings are configured in BIOS then Windows might not know they exist. – jackweirdy Jul 06 '12 at 12:43
  • @Rhyuk I think you have misunderstood . I am not taking about processor usage. I have made it clearer now. please re-read. – Serious Jul 06 '12 at 12:58
  • @jackweirdy Cool and quite is enabled in BIOS so the processor can run at different states. Btw the settings were working fine till now. – Serious Jul 06 '12 at 13:01
  • My bad, work firewall is blocking images. Thought this was BIOS configured. – Rhyuk Jul 06 '12 at 13:36
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Somebody else reported a similar issue and it seems that it was caused by the ATI/AMD Catalyst Control Panel. Closing it and removing it from startup might fix the problem.

Source: http://www.vistaheads.com/forums/microsoft-public-windows-vista-performance-maintenance/180652-power-options-keeps-resetting-upon-startup.html

James P
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  • Thanks. This fixed the problem, but I don't understand why all of a sudden catalyst started causing problem. – Serious Jul 08 '12 at 15:20
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According to this thread, this could also be caused by ASUS touchpad program. For my device(ASUS T300 Chi with Windows 10), importing the following task:

<?xml version="1.0" encoding="UTF-16"?>
<Task version="1.4" xmlns="http://schemas.microsoft.com/windows/2004/02/mit/task">
  <RegistrationInfo>
    <Date>2013-09-24T21:40:06.4839126</Date>
    <Author>DuctTapeDude</Author>
    <Description>Combats 100% Minimum CPU use from the Asus Smart Gesture thing</Description>
  </RegistrationInfo>
  <Triggers>
    <EventTrigger>
      <Enabled>true</Enabled>
      <Subscription>&lt;QueryList&gt;&lt;Query Id="0" Path="System"&gt;&lt;Select Path="System"&gt;*[System[Provider[@Name='Microsoft-Windows-UserModePowerService'] and (Level=4 or Level=0) and Task = 10 and (EventID=12) and Security[@UserID='S-1-5-18']]]&lt;/Select&gt;&lt;/Query&gt;&lt;/QueryList&gt;</Subscription>
    </EventTrigger>
  </Triggers>
  <Principals>
    <Principal id="Author">
      <UserId>S-1-5-18</UserId>
      <RunLevel>HighestAvailable</RunLevel>
    </Principal>
  </Principals>
  <Settings>
    <MultipleInstancesPolicy>IgnoreNew</MultipleInstancesPolicy>
    <DisallowStartIfOnBatteries>false</DisallowStartIfOnBatteries>
    <StopIfGoingOnBatteries>true</StopIfGoingOnBatteries>
    <AllowHardTerminate>false</AllowHardTerminate>
    <StartWhenAvailable>false</StartWhenAvailable>
    <RunOnlyIfNetworkAvailable>false</RunOnlyIfNetworkAvailable>
    <IdleSettings>
      <StopOnIdleEnd>true</StopOnIdleEnd>
      <RestartOnIdle>false</RestartOnIdle>
    </IdleSettings>
    <AllowStartOnDemand>true</AllowStartOnDemand>
    <Enabled>true</Enabled>
    <Hidden>true</Hidden>
    <RunOnlyIfIdle>false</RunOnlyIfIdle>
    <DisallowStartOnRemoteAppSession>false</DisallowStartOnRemoteAppSession>
    <UseUnifiedSchedulingEngine>false</UseUnifiedSchedulingEngine>
    <WakeToRun>false</WakeToRun>
    <ExecutionTimeLimit>PT5S</ExecutionTimeLimit>
    <Priority>7</Priority>
  </Settings>
  <Actions Context="Author">
    <Exec>
      <Command>C:\Windows\System32\powercfg.exe</Command>
      <Arguments>/SETDCVALUEINDEX SCHEME_BALANCED SUB_PROCESSOR PROCTHROTTLEMIN 0</Arguments>
    </Exec>
    <Exec>
      <Command>C:\Windows\System32\powercfg.exe</Command>
      <Arguments>/SETACVALUEINDEX SCHEME_BALANCED SUB_PROCESSOR PROCTHROTTLEMIN 4</Arguments>
    </Exec>
    <Exec>
      <Command>C:\Windows\System32\powercfg.exe</Command>
      <Arguments>/SETDCVALUEINDEX SCHEME_BALANCED SUB_PROCESSOR SYSCOOLPOL 0</Arguments>
    </Exec>
    <Exec>
      <Command>C:\Windows\System32\powercfg.exe</Command>
      <Arguments>/SETDCVALUEINDEX SCHEME_BALANCED 44f3beca-a7c0-460e-9df2-bb8b99e0cba6 3619c3f2-afb2-4afc-b0e9-e7fef372de36 0</Arguments>
    </Exec>
  </Actions>
</Task>

provided in this thread seems to have it fixed for me.

xgdgsc
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