High CPU From Process Explorer's DPCs
Apr 10, 2008
On my computer, I have process explorer automatically run on startup, and it shows a graph of CPU usuage in the system notification area. Sometimes it shows a lot of CPU usuage being used, and so I open up the program to see what process is taking up so much CPU. But process explorer shows that DPCs are what is taking it up, and it is almost always over 60%. I looked up DPCs and it stands for Deferred Procedure calls, which has to do with hardware I believe, but I don't have any external hardware devices attached when the DPCs take up alot of CPU
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Oct 19, 2007
I suspect that my PC is infected with Vundo. Ran FixVundo (Symantec Trojan.Vundo Removal Tool 1.5.0)in safemode but was not detected.
Seeing gebyy.dll and pmnnnkk.dll in Hijackthis! but unable to fix (log attached).
Logfile of Trend Micro HijackThis v2.0.0 (BETA)
Scan saved at 11:54:54 PM, on 10/18/2007
Platform: Windows XP SP2 (WinNT 5.01.2600)
Boot mode: Normal
Running processes:
D:WINDOWSSystem32smss.exe
D:WINDOWSsystem32winlogon.exe
D:WINDOWSsystem32services.exe
D:WINDOWSsystem32lsass.exe
D:WINDOWSSystem32svchost.exe
D:WINDOWSsystem32svchost.exe
D:WINDOWSsystem32spoolsv.exe
D:WINDOWSExplorer.EXE
D:WINDOWSsystem32ctfmon.exe
D:WINDOWSSystem32svchost.exe
D:PROGRAM FILESPROCESS EXPLORERPROCEXP.EXE
D:WINDOWSSystem32svchost.exe
D:Program FilesInternet Exploreriexplore.exe
D:Documents and SettingsBuzzDesktopHiJackThis_v2.exe
O2 - BHO: (no name) - {837B45D6-BF85-457D-AABF-6D2E7815F791} - D:WINDOWSsystem32pmnnnkk.dll
O2 - BHO: (no name) - {CF3941B9-5A9D-4657-8E2F-D40E79C4AEDA} - D:WINDOWSsystem32gebyy.dll
O4 - HKLM..Run: [PinnacleDriverCheck] D:WINDOWSsystem32PSDrvCheck.exe -CheckReg
O4 - HKCU..Run: [ctfmon.exe] D:WINDOWSsystem32ctfmon.exe
O16 - DPF: {0B79F48A-E8D6-11DB-9283-E25056D89593} (F-Secure Online Scanner 3.1) - http://support.f-secure.com/ols/fscax.cab
O20 - Winlogon Notify: pmnnnkk - D:WINDOWSSYSTEM32pmnnnkk.dll
--
End of file - 1244 bytes
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Nov 27, 2008
i'm desperate, i dont understand why my pc goes 100% cpu whenever i try to download anything (even when loading a Internet video.).i'm using ie7.
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Jun 29, 2005
Windows has been running really slowly sometimes and i've ran spybot, adaware and a couple others and its still running slow. when i went into task manager it said explorer.exe mem and cpu usage was very high; cpu was 99 and mem was over 100k
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Apr 29, 2006
Win Xp - Service Pack 2, I suspect the problem lays with a trojan dropper. In fact I'm certain. At the moment I am getting a trojan dropper putting random files into my temp internet files every 3-4 hours - the latest file being SQL.AVG?? Norton deletes it as soon as it appears but I'm certain its causing my 90-100% CPU usage on explorer. exe. Its been doing this for about the last week.
I've got all of these installed - ZoneAlarm, Norton, AVG 7.1, Ad-Aware Se and even Microsoft Anti-Virus. I updated them all and went into safe mode and ran every single one of them on full scan and none have found the culprit. When booted back into normal mode the trojan dropper has started again and cpu usage back up to 100% for explorer.exe. Basically everthing crawls after 5 or so minutes of reboot.
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May 28, 2010
Does explorer.exe and svchost.exe seems to be using a lot of memory,or am i just being paranoid?
Its not usually like this though:
I have also included an Hijackthis report:
Logfile of Trend Micro HijackThis v2.0.3 (BETA)
Scan saved at 3:00:25 PM, on 5/28/2010
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v8.00 (8.00.6001.18702)
Boot mode: Normal
Running processes:
C:WINDOWSSystem32smss.exe
C:WINDOWSsystem32winlogon.exe
C:WINDOWSsystem32services.exe
C:WINDOWSsystem32lsass.exe
C:WINDOWSsystem32svchost.exe
C:Program FilesCommon FilesBitDefenderBitDefender Update Servicelivesrv.exe
C:Program FilesBitDefenderBitDefender 2009vsserv.exe
C:WINDOWSSystem32svchost.exe
C:WINDOWSsystem32LEXBCES.EXE
C:WINDOWSsystem32spoolsv.exe
C:WINDOWSsystem32LEXPPS.EXE
C:WINDOWSExplorer.EXE
C:Program FilesABBYY FineReader 9.0NetworkLicenseServer.exe
C:Program FilesJavajre6injqs.exe
C:WINDOWSsystem32svchost.exe
C:Program FilesWestern DigitalWD Drive ManagerWDBtnMgrSvc.exe
C:Program FilesLClockLClock.exe
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Jun 1, 2005
I'm having a problem when i start up my comp. after logging into my user account, the monitor sorta "blinks" periodically.. as in, the wallpaper is there, but all the icons disappear. However, as soon as i open Norton Antivirus , the problem stopped (until the next time i restart the computer and log on).
On loggin in, I checked the cpu usage with taskmgr, and foud that it was goin pretty high (jumping frm 10%to 60% or 80%).. when i checked out the running processes, "EXPLORER.EXE" was taking up around 95% or so.
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Jul 3, 2006
My computer has been chogging quite a bit lately after booting up and continues to run sluggish...I've noticed the explorer.exe in my task manager is running extremely high. It seems to start up about 5 minutes after booting up, and continues to wreak havoc. I've seen this to be a problem everywhere from an a hole virus to RAM not sitting correctly. I've ran Ad Aware, AVG and a few others to check for a virus or anykind of malicious spyware...everything has come back clean.
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Feb 6, 2004
My explorer has gone nuts. It will run programs, run shortcuts to anything but folders and the real problem is that it wont open a signal folder either by explore or open commands. I've reinstalled WINXP off the CD as update, nothing happened. I've ran the steps listed in the last forum. Nothing has worked. I'm desperate. I'm running WinXP Professional on a basically 7 month old Dell comp with 512RAM and a 2.4 GhZ Pentium in it. I'm lost at what to do.
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Mar 29, 2005
I can't right-click on my desktop or in any explorer.exe process. Also, my desktop is reading off of C:Desktop instead of C:Documents and SettingsUSERNAMEDesktop?
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Aug 4, 2005
I was recently informed that if a svchost.exe process is using more memory than explorer.exe, it's a dud. Is this true? Also, I have six svchost.exe processes running at once, is this normal ?
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Nov 18, 2007
I am using Windows XP Home, on an AMD Athlon XP 2200+ 1GB RAM. When I have been using the internet (Internet Explorer version 7) I occassionally experience a slowdown of everything internet related. I check the Tas Manager and it shows my System Idle Process using 99% of CPU. I find this odd, as my system is clearly not idle cause I am using it! My computer is on a network, and I havent heard it happening to other computers on the network until today, when the same thing occurred on another machine in the network. any ideas on what it is?
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Apr 6, 2007
I'm running XP pro SP2. I have a gig of ram and my mother board is an Intel D101GGC. My CPU is Intel Pentium D 920.
If I use Windows Explorer to go deeper than the first level of any tree, CPU usage goes to 100% and stays there. I've disabled System Restore because it wouldn't let me go back in time anyway and this program is a known resource gobbler. Didn't help. I've attached a hijackthis logfile to see if anyone recognizes a Trojan, etc. I would appreciate any help at all.
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Sep 28, 2006
when I push ctrl+alt+del i cant get into the process manager!! the process button is not lit and cannot push it!anyone knows what can i do?
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Aug 23, 2005
System Idle Process is at top of processes tab in windows task manager. I've read in an earlier post this causes cpu spikes. should I just highlight it and click end process? or is there something else I need to do.
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Oct 31, 2005
I recently kept getting a blue screen everytime I tried to restart my computer. This happened with my old computer and I ended up having to get a new Hard Drive. Well I was able to fix this problem by booting in safe mode and system restoring to an earlier date. Well now my CPU Usage is always running high, over 30% almost aways, dipping all the way up to 100% sometimes. This is when I have nothing system heavy running, I have Dual 3.2Ghz EE processors and 2GB of Ram.Well I was getting a similar problem last month, it was because of the trojan vundo. I got vundo off a couple weeks ago and no more CPU Usage problems. Well I didn't go THAT far back in system restore. So I did an updated Norton Scan, and updated Adaware scan and an updated spybot scan, still gettin the problem. It's doin enough that I cant watch videos with th epicture being jerky and sometimes it freezes my IE for 15 or so seconds.
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Dec 25, 2005
I notice sometimes that my computer usage will jump to a very high percent. Most of the time between 60-100%. I get this when Im not doing anything, if theres nothing running (That I know of). Sometimes if I have more then 1 IE or FireFox box open. It will jump to 80%. Can someone help me find out whats going on?
Rob
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Feb 10, 2006
I'm hoping I can resolve an issue here. First let me start out by apologizing for this long post, but i'm trying to get as much info out as I can.Recently i've been having big problems with my computer running VERY slow, my computer takes 5 minutes to boot up when normally it would only take 1, my mouse moves very laggy, and I can't start up any programs without having to wait minutes just for it to start. When I look at the performance monitor, my CPU usage is anywhere from 50%-100%...and i'm not even running anything! First let me get somet things out of the way. First off I have a laptop with AMD Athalog 64 2.5 ghz processor, 1.0gig of ram, and a ATI X600 mobility video card. I've had my computer for a little over a month so it's not outdated or anything, and all of my drivers are up to date.
I did a viruscan on my computer which took very long b/c my CPU usage was very high, and nothing negative came back when I did so. I ran adaware and removed all of the adware I had.still didn't fix the problem.
After trying both of those things I decided i'd try to restore my computer to an earlier point. it was successful. That was a couple days ago when I was having this same problem. Well here we are present date, and i'm having the same problem again. I tried restoring my computer to an earlier point again, but this time it resulted with some troublesome problems, apparently an important ATI file was deleted or something (not sure exactly) and I couldn't boot my computer up in normal mode, I had to go back into safe mode and rollback the drivers for my computer to even boot up. That was approximately 30 minutes ago, and here i am now. Obviously restoring didn't help this time because my computer is very slow at the moment.
I don't get it, because both times this has happened, it comes out of no where. My computer will be running just fine, then 'BAM!' out of no where my CPU usage is out of the roof. I'll try restarting, closing everything on my toolbar nothing works. Speaking of toolbars, mine is pretty empty, it's not overloaded with a bunch of crap, mostly just important stuff like firewall and virus scan. I can't imagine that restoring my computer is the only option here. There has to be something that is causing this, that i'm not detecting. Originally I would have guaranteed it was a virus, but McAfee Virusscan isn't picking up anything. And it's obviously some software issue, because when I tried restoring my computer a few days ago when I was having this problem, everything ended up working normally after that. This time when I tried it though, there was no luck.
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Feb 19, 2006
Ive noticed that for the most minmal ofpc tasks my cpu usage alwasy jumps to 89-100% which in turn slows down my PC? does anyone have any ideas how i can lower that?
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May 22, 2006
My CPU Usage is too high. My computer is running really slow because of it. I looked under Windows Task Manager/Processes and System is taking up about 50% of the CPU Usage. It is not a virus because I have been through a whole thread in the Security section and they said I have no infection. This does this off and on. I have been having this problem for a while and then it stopped. I just restarted my computer and it just started again.
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Jan 2, 2007
This question is actually going to be for a friend of mine mostly and secondly for me. We have the same issue.We both have Norton Antivirus 2007 and the latest updates We both Have Zone Alarm Pro and the latest updates We both have all the latest drivers for all our hardware and use third party driver toolkits just to be sure about it We both Recently formated and reinstalled windows and made sure we have all the latest windows updates We both scan for viruses and other types of malware religiously For some strange reason my computer will be completely idle and out of nowhere the CPU will start running high (fast).I mean, it's literally out of nowhere because there are no changes in whatever i am doing. I will leave the computer completely untouched, without being connected to the internet and the CPU will just go off on its own running at high speeds out of nowhere. I don't even have a screensaver.
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Nov 23, 2007
this problem just happened today.. my cpu usage seems to spike to about 50% every 5-10 seconds, and it's become unbearable to work with.i scanned with avg and it detected nothing.. i believe the problem stems from something called services.exe because when i ctrl alt del, i can see in processes that it spikes up to a high amount of cpu usage. i did some googling and haven't found much help on the issue.
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Sep 16, 2006
I formated my pc, deleted the partitions, recreated them and installed 2 OS of XP in each partition (same way and thing as I had b4). This time my cpu approaches 100% with nearly anything, from opening a window to scrolling down. Everything I do raises the cpu. The only thin I installed are the drivers for motherboard and antivirus. I checked the pc with 3 diff programs for viruses and nothing came up. I can do nothing! Plus I got this windows poping up telling me that I got system critical errors and that my registry is corrupted (?)
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Mar 19, 2007
For the past couple of weeks every time I turn on my PC and 'go online' within a few minutes the pc sounds as if it is downloading updates or similar ; but it isnt. It stops if i go off line . while this is is happening , which can last 4 or 5 minutes the CPU usage ia very high so the system is painfully slow. I have scanned for spyware etc but all seems ok . how can i find out what it is 'doing'. and more to the point how can i stop it ?
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Sep 13, 2005
Hi. Don't know exactly where to go to ask this question, but I want to add a Hi Speed USB 2.0 and firewire 3.5 in. drive to my computer tower in the empty bay What kind of connection should I be looking for on the motherboard.
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Apr 1, 2006
I have noticed in the last few days that when I go to Task Manager is shows my PF Useage to sometimes be as high as 1.06 GB. I am also getting a message that indicates my Virtual Memory is low and that Windows is increasing it? I also notice my CPU goes from 2 or 3 per cent to 60 or 70 percent.
When I reboot the PF useage will drop to a much lower number.I have done a total virus scan, scan with Spybot and Ad-Aware in addition to the AOL spyware program. I also run Spyware Blaster. I also did a system restore to a point last week.Can anyone offer any explnation about these matters or have any suggestions as to what is going on and what
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Feb 6, 2008
My Compaq running on Windows XP Home has suddenly and mysteriously started running at high CPU's (almost 100%) at boot. From Task Manager, I could see that it was the svchost.exe that was running high. I contacted Microsoft and after 2 1/2 hours of shutting down literally every process and then slowly re-adding them, it was found that it is the wireless zero config that is running all of the CPU's. I am on a laptop (wireless through DSL - sbcglobal - and using a linksys router which is running at 11 - maximum connection)downstairs. I have NEVER had a problem until 2 days ago. I have added NOTHING to the computer.
I can sit directly next to the router (upstairs) and the CPU will drop, but not completely. When I plug into Linksys using ethernet, the CPU stops to 1% - and the computer resets itself. It will be fine the rest of the day. I have also had success unplugging Linksys for about 5 minutes (while sitting next to it) and that also seems to reset the CPU usage. HOWEVER - if I restart, either from warm or cold boot, the same cycle happens all over.Linksys gave me a patch, which has done nothing. They said if it was a Linksys problem, the patch would have fixed it.Microsoft can't help - it is a wireless issue.SBC can't help - it is a Linksys issueI haven't yet called Compaq because I am afraid they will tell me that the high CPU is due to a failing in my internal wireless. THE Presario 3240US IS 4 YEARS OLD AND HAS BEEN GREAT - NEVER ANY MAJOR PROBLEMS! Obviously, the computer is having to work too hard to connect to the wireless system, thus the high CPU's. And, when it runs high, I have problems with the internet slowing down. Anyone out there ever had this problem? Is it time for a new computer?
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Oct 10, 2006
I'm running XP on a computer with 1.3 gig CPU, 768MB RAM and 60 gig HD. My CPU usage is typically about 25-40%, but if I want to link to a video clip online and run it, CPU usage goes to 100% and the video won't run.I had a bad browser hijacker in May which took 10 days to fix with Tech guy help and me learning along the way, and a small problem in August, again fixed through advice from TechGuy, which I really appreciated.However, I have another teen living with us now, who says that my CPU usage should only be about 5%.Could someone help me decide what I layers of protection I can do without or how to configure all the anti-everything software I have that was recommended in May? I look forward to hearing back from someone.
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Apr 16, 2006
Every time i use my windows media player to play mp3s it changes the computer resolution from high to low.
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Sep 13, 2005
Within the last week or so I've frequently encountered a very high CPU load that stays around 70, 80, 90 percent and sometimes even gets stuck at 100% at which point I usually just have to reboot. It occurs even when no programs are running except minimal background like McAfee and ZoneAlarm. P4, 2GHz, 512 DDR RAM, XP SP2.
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Feb 10, 2005
When transferring pictures from my camera Fuji FinePix S7000 to my computer, I get a pop-up saying, pictures can be transferred faster using a high speed usb driver. Is this something availible for free on the internet or something that must be purchased? I have done a search but couldn't find anything.
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