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High CPU usage for no apparent reason

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#1 replica


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Posted 07 August 2013 - 03:25 PM

A couple of days ago I noticed that my Windows start up process takes longer than usual (plus I can see a significant delay between when I touch pad and actual cursor move) then I saw a high CPU usage % although through Task Monitor none of the memory consuming processes were running (i.e. System Idle is around 80-90%). I run chkdsk but it appeared the disc integrity was in place. Verifier.exe didn't help much either although I'm not sure if I used it correctly.


Then I browsed Internet and found one post with similar symptom I have been experiencing for a while (my computer randomly locks up and has to be switched off by holding the power button down until it turns off) but it was no more than annoying thing I could live with: 


Service Control Manager [7026] - The following boot-start or system-start driver(s) failed to load: SBRE. 


Now I can't watch a movie because sound is distorted and trembling due to high CPU load and everything is slowed down drastically.


I've posted Hijack and DDS logs in the different topic http://www.bleepingcomputer.com/forums/t/503428/high-cpu-usage-with-no-apparent-reason/

but after thinking about it for a while and since I observe slowdown right from the boot phase I don't think this is spyware/virus related. So this topic appealed like more applicable one (please direct me elsewhere if it's not). 


My theory is it could have been caused by some leftovers from antiviruses or faulty drivers/removal of a driver or usage of CCleaner when some registry entries probably got removed which affected the whole thing. But then what do I know? Please be my guest. Thanks in advance! 

Edited by hamluis, 07 August 2013 - 05:39 PM.

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#2 hamluis



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Posted 07 August 2013 - 05:42 PM

Since you have an open topic in the MRL forum...let's go ahead and pursue that topic to closure.


The possibilitiy of malware is a big obstacle to have eliminated from consideration.


Once that topic is concluded, you can either reopen this topic (which I will close) or post a  new topic with then-current issues.  A simple PM to me will result in reopening.


This topic is now closed to avoid confusion.




Topic reopened, determined that it is not a malware problem.

Edited by hamluis, 15 August 2013 - 05:22 PM.

#3 Wolverine 7

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Posted 08 September 2013 - 09:37 AM

You need to find out whats causing the high cpu,if its not malware you may have an application thats not closing properly

or a service could be the problem.Try using the Task Manager or Systinternals Process Explorer to locate the offender and stop it.

I just had this with a non closing application taking cpu up to 90 percent.Once i found the culprit and closed it problem gone.


Anyway,thats one possibility,best to troubleshoot one possibility at a time and iliminate till you find the issue.

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