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Windows 7: CPU usage 95% when 'puter is idle, off network, and indexing turned of

24 Mar 2011   #1
zzita

Windows 7 Professional 32 bit
 
 
CPU usage 95% when 'puter is idle, off network, and indexing turned of

i have been trying to figure this out with HP tech support for months. a friend suggested some of you brilliant folks might have ideas.


i am running windows 7 pro on a 1-processor netbook, and have had this problem since day one.


--
things i have tried:


new ram chip


new motherboard (courtesy of HP)


defrag hard drive and scan for malware and errors


reinstall op system -- twice with one version, a third time with new version


reinstall all the software i use


use different software (e.g. chrome instead of firefox, gmail instead of eudora)


update BIOS


and of course all updates for op system, software, drivers, etc.


--


it seems to be windows files that are using the cpu so insanely. WmiPrvSE.exe and a whole bunch of instances of scvhost.exe with descriptors like (localserviceandnoimpersonation) and (DcomLaunch), whatever the heck those are.


what do those files do? what should -I- do?

thanks for any and all suggestions.


My System SpecsSystem Spec
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24 Mar 2011   #2
zzita

Windows 7 Professional 32 bit
 
 

i found a few threads here with similar issues, unfortunately their solution was to turn off windows gadgets. i am not running any gadgets.
My System SpecsSystem Spec
24 Mar 2011   #3
scrooge

win 7 ( 64 bit)
 
 

try this link for info on WmiPrvSE.exe

http://www.tech-faq.com/wmiprvse-exe.html

scrooge
My System SpecsSystem Spec
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24 Mar 2011   #4
zzita

Windows 7 Professional 32 bit
 
 

oh, thx, scrooge, and yes, i should have mentioned:

i checked all 10 instances of svchost currently running, and they are all in the correct file location. so i guess that means they are not a virus.
My System SpecsSystem Spec
24 Mar 2011   #5
sreedhav

MS Windows 7 Home Premium 64-bit SP1
 
 

Dear zzita,
Welcome aboard! 1) How many GB RAM have you installed right now?

2) Do you use Winamp player?

3) KIndly do a recheck for malware with

A) MBAM : malwarebytes.org

B) SAS Portable : SUPERAntiSpyware.com - SUPERAntiSpyware Portable Scanner

C) Rootkit Buster : Download Rootkit Buster (free)

and D) after defragging, run an online virus scanner : HouseCall - Free Online Virus Scan - Trend Micro USA

Kindly come back and give a feedback!

Did you perchance use a registry cleaner?

Regards,
Sreedhav
My System SpecsSystem Spec
24 Mar 2011   #6
James Colbert

 
 

Welcome, zzita.

Just to cover the bases, a few questions:

1) From where do you derive the 95% usage figure (i.e., Task Manager performance tab? Processes tab?)?

2) Is your system performance suffering?

At 95% usage, I would expect system performance to be dismal.

3) Are you sure that you are not taking the figure from the System Idle Process under the Processes tab in Task Manager? If so, this is the percentage of CPU that is idle and nothing to worry about.

If 95% is the real figure of CPU usage, and given that you've reinstalled a time or two, I would try troubleshooting with a Clean Boot. Post back and let us know how it goes.

James
My System SpecsSystem Spec
24 Mar 2011   #7
zzita

Windows 7 Professional 32 bit
 
 

>Welcome aboard!

thank you )).

>1) How many GB RAM have you installed right now?

2gb.

>2) Do you use Winamp player?

no.

>1) From where do you derive the 95% usage figure (i.e., Task Manager performance tab? Processes tab?)?

resource manager.

>2) Is your system performance suffering?

>At 95% usage, I would expect system performance to be dismal.

yep, it is.

>3) Are you sure that you are not taking the figure from the System Idle Process under the Processes tab in Task Manager?

yes, i am sure .

i will try all the suggestions and post back. thank you, both .
My System SpecsSystem Spec
25 Mar 2011   #8
MilesAhead

Windows 7 32 bit
 
 

In Vista I had something similar. It ran up the HD usage more than CPU. But it did show svhost.exe. Turns out I was running locate32 search software. I had file change notifications enabled. This caused explorer to periodically try to open every file on my system including files on external USB drives.

I turned off Windows Indexing(by turning off the service) and switched to Everything search. This eliminated the issue. But if you are not using locate32 there still may be some app that has file change notification enabled using the old fashioned methods.

A quick way to check is use
http://technet.microsoft.com/en-us/s.../bb896645.aspx

and see if Explorer is going down the list opening every file and closing it again.
My System SpecsSystem Spec
25 Mar 2011   #9
zzita

Windows 7 Professional 32 bit
 
 

@miles:

after all my op syst reinstalls i have very little software on this computer . i turned off windows search indexer, and haven't added any.

i am d/l'ing the antimalware stuff...
My System SpecsSystem Spec
25 Mar 2011   #10
MilesAhead

Windows 7 32 bit
 
 

Other than MalwareBytes Anti-malware the only thing that comes to mind is Windows Media Player. That's another one that will scan every file on the system to add media files to the library.

If it's showing heavy usage on svchost rather than ordinary exe then chances are it's something that Windows installs by default, such as WMP media file indexing. Also I remember in Vista the Customer Experience program, even if you opt out of it, it has settings in Task Scheduler to gather stats anyway. Another of those that will scan just about everything rather than doing what you want the PC to do. You have to go into Task Scheduler and delete the crap by hand.
My System SpecsSystem Spec
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 CPU usage 95% when 'puter is idle, off network, and indexing turned of




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