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100% CPU usage by "system?"


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#1
cowsonfire

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Got this problem with "system" taking up 100% CPU.
Not "system.exe" mind you, but "system"
It used to only happen when I opened a full-screen program (or probably just any program that made my comp put some effort into its existance), and would then continue to stay at 100% until I shut my comp off. Now it happens when I boot up.

Norton's stuff seems to over-ride the "system" process, but that's all.
Also, Norton has not found any viruses, nor has Ewido found any spy/malware.
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#2
unholypoo

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d00d l_lr f00k3d
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#3
1101doc

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Hi, and welcome to Geeks to Go! The "System" entry in Taskmanager includes much that it is not designed to reveal. To get a clearer picture of what is going on, I suggest Sysinternals free Process Explorer. Get it here: http://www.microsoft...ssExplorer.mspx (Download link at bottom of page.) A click on the main column header, "Process," will switch to a "Process Tree" view, and those processes running under "System" will become apparent. If you choose CPU Time as one of the options under View>Select columns.., a click on that column header will sort the processes accordingly. Your culprit should be near the top. A double click on any process will bring up a "Properties" display in which much more information is available. Note especially the amount of usage by "Interrupts." If high, the root of the problem may be hardware related.
For information about the various processes, here are some good places to check:
http://www.ppedia.com/
http://www.fileresearchcenter.com/
http://www.answersth...es/tasklist.htm
http://www.kephyr.com/filedb/index.php
http://www.what-process.com/lists.aspx
http://exelib.com/
http://www.processlibrary.com/
Here is a place to check any questionable file. It gets scanned by almost all available "anti-" tools:
http://www.virustota.../en/indexx.html
If at any time in your investigation you have reason to suspect that malware is involved, go here:
http://www.geekstogo..._Log-t2852.html
Follow the self-help instructions, and if not completely effective (all scans return negative findings on rerun),
post a HiJackThis log according to the instructions in the above link. Good luck, and please post back with your progress.
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#4
cowsonfire

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Scans reported no findings. In Process Explorer I switched over to the process tree view, and everything under System had 0% CPU usage, though System had 90% and above. CPU Time showed System third from the top, below System Idle Process. I couldn't seem to find any questionable files to check at the sites you linked, but maybe I'm just a bit slow.
Edit: looking through the HiJack This log, I've noticed PopCap. Haven't been to anything related to it since I've got this computer, just think it's a bit odd.


Sorry if this is inappropriately early, but here's the HiJack This log:

HijackThis log removed

Edited by Fenor, 25 March 2007 - 01:21 PM.

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#5
1101doc

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I am sorry, but I cannot comment on your log. HiJackThis logs should be posted here: http://www.geekstogo...hp?showforum=37 We have rigorously trained people who will review your findings and offer specific recommendations. For more information from Process Explorer, View>Show lower Pane, and select .dlls from lower pane view. That may offer a clue. The whole thing can be stretched from the "bumpy" lower right corner, and the lower pane can be opened by using the "tweezers" on the window margins.
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#6
cowsonfire

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I'm not quite certain what's going on, but it seems to be fixed now - rather magically. Its been suggested that I'm having hardware problems caused by heat. What do you think?
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#7
1101doc

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Heat is always a concern. Try Speed Fan or Motherboard Monitor for temps. I tend not to trust "magical" fixes. I really think you should post that log in the malware section and have it reviewed.
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#8
cowsonfire

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The problem doesn't appear to be with heat.
Norton had recently been having trouble updating. I looked up the error, and I was told to uninstall and reinstall. It updates fine now, and I was wondering if this could have had some impact on it? I'm just taking a wild guess here, but could it in any way have been constantly trying to go through automatic updates in the background, failing and repeating?

Thank you for putting up with my complete ignorance so far.
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#9
1101doc

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With Norton, anything is possible. As I said, I think you should have that log reviewed.
http://www.geekstogo..._Log-t2852.html

Edited by 1101doc, 25 March 2007 - 12:58 PM.

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#10
Whiskeyman

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I would post your HijackThis log in the appropriate section of the boards as instructed previous. I believe you do have a problem with some malware.
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#11
Fenor

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cowsonfire:

Please do what has been suggested by both 1101doc and Whiskeyman, and that is to go to the Malware Forum and run all the steps located in the START HERE. These self-help tools will help you clean up 70% of problems on your own. If you are still having problems after doing the steps, then please post a HiJackThis Log in THAT forum. If you are unable to run and/or post a HJT log, then post that in your initial post in the topic you create in that forum.

This topic is now closed.

Fenor
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