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Windows 7: High CPU usage by process "System" when downloading

26 Dec 2009   #1
kdogg

Windows 7 Ultimate x64
 
 
High CPU usage by process "System" when downloading

This is freaking driving me crazy. This is the SECOND Windows 7 system I've had this issue on and it completely cripples the computer.

Basically, whenever I downloaded anything, be it via uTorrent, Firebox, even speed tests, my CPU usage goes to 100% and nothing responded until the download it stopped or it finished on it's own.

Both computers lasted about a month before this started, both computers were TOTALLY different hardware. In fact one was a laptop and one was a desktop. Then just one day, poof, 100% cpu when downloading.

I've tested all types of downloads as mentioned above, uTorrent, speed tests, general file downloading, Windows updates, anything that causes bandwidth usage makes the process "System" sky rocket to 100%.

I've tried the normal things. Updating AV software, full system scan. Updated and ran Malwarebytes and ran a full scan. Ran defrag, ran check disc. I've posted HiJackThis logs else where, no ones sees anything out of the norm...

Now if I just format the problems solved for about a month or so then it will just come right back.

This only seems to happen to me with Windows 7. The laptop did it 3 times, each time I got about a month into the Windows 7 install and finally I went back to Windows XP on the laptop, problem solved.

Now my new desktop is running W7, month or so into the install SAME EXACT problem.

PLEASE can anyone tell me anything I haven't thought to try? I don't want to run an OS that requires 12 fresh installs a year.


My System SpecsSystem Spec
.
26 Dec 2009   #2
seekermeister

W7x64 Pro, SuSe 12.1/** W7 x64 Pro, XP MCE
 
 

It would be very difficult to know what the problem is precisely, but I would suspect that the problem is caused by some program that you commonly use (not PE), that is related to internet activity, or more specifically downloading. I would create a list of such programs, disable them all, and see what happens. If the downloads can then be performed normally, reinable each of those programs, one by one, until the culprit is found.
My System SpecsSystem Spec
26 Dec 2009   #3
sniperdude

win 7/xp pro... dual boot
 
 

yeah has to be something your installing yourself


I would start by opening the task manager going to processes and out of the watching what is using more cpu than anything while a torrent is running

you should be able to do this
My System SpecsSystem Spec
.

26 Dec 2009   #4
Capt.Jack Sparrow

Windows 7 Ultimate - 64-bit | Windows 8 Pro - 64-bit
 
 

Quote   Quote: Originally Posted by kdogg View Post
This is freaking driving me crazy. This is the SECOND Windows 7 system I've had this issue on and it completely cripples the computer.

Basically, whenever I downloaded anything, be it via uTorrent, Firebox, even speed tests, my CPU usage goes to 100% and nothing responded until the download it stopped or it finished on it's own.

Both computers lasted about a month before this started, both computers were TOTALLY different hardware. In fact one was a laptop and one was a desktop. Then just one day, poof, 100% cpu when downloading.

I've tested all types of downloads as mentioned above, uTorrent, speed tests, general file downloading, Windows updates, anything that causes bandwidth usage makes the process "System" sky rocket to 100%.

I've tried the normal things. Updating AV software, full system scan. Updated and ran Malwarebytes and ran a full scan. Ran defrag, ran check disc. I've posted HiJackThis logs else where, no ones sees anything out of the norm...

Now if I just format the problems solved for about a month or so then it will just come right back.

This only seems to happen to me with Windows 7. The laptop did it 3 times, each time I got about a month into the Windows 7 install and finally I went back to Windows XP on the laptop, problem solved.

Now my new desktop is running W7, month or so into the install SAME EXACT problem.

PLEASE can anyone tell me anything I haven't thought to try? I don't want to run an OS that requires 12 fresh installs a year.

Hi, Welcome to SF,

I actually did a small research on your issues most of the cases the culprit was a file called ntkrnlpa.exe
that was pointing to NIC drivers. So my recommendation would to make sure you have the latest version NIC drivers. Also download Process Explorer. Using that you could find which dll is particularly causing the problem
If you like to know more about it will add a link Mark's Blog : The Case of the System Process CPU Spikes that should help you to find more information.

Hope this helps
My System SpecsSystem Spec
26 Dec 2009   #5
Robloid

Windows 7 Professional
 
 

I was having a similar issue. My system kept slowing down just surfing the internet. The CPU usage would jump to 25% (100% on one core) and the video would lag while scrolling webpages. The issue only recently started so I searched online for a solution and it sounded similar to problems a lot of others were having; but I couldn't find a solution that worked for me.

So I tried to troubleshoot a little further and found when I unplugged the network cable the issue disappeared. I then decided to replace my new router with my old one and to my surprise the issue did not happen with the old router. OK, there must be something wrong with the router or its setup.

I hadn't changed anything recently so I searched through the settings on the router and found that the port forwarding was set to what I thought was the IP of my system. I then found out that the system must have renewed the IP and got a different one. Once I changed the port forwarding to the new IP the issue no longer was happening.

I hope this can help some others who are running into this problem.

Rob.
My System SpecsSystem Spec
27 Dec 2009   #6
kdogg

Windows 7 Ultimate x64
 
 

The best I can tell with the process explorer is that something called teefer2.sys, under system is using a lot of threads/cpu when this is happening.

Seems to be something to do with Symantec Endpoint.

Not sure if this is the problem or not though.
My System SpecsSystem Spec
27 Dec 2009   #7
logicearth

Windows 10 Pro (x64)
 
 

Well try uninstalling your antivirus and see if it still happens.
My System SpecsSystem Spec
27 Dec 2009   #8
sniperdude

win 7/xp pro... dual boot
 
 

teefer2.sys Symantec CMC Firewall Teefer2 Symantec Corporation
My System SpecsSystem Spec
27 Dec 2009   #9
seekermeister

W7x64 Pro, SuSe 12.1/** W7 x64 Pro, XP MCE
 
 

My first reaction, anytime that I see the word Symantec, is to uninstall it. This may be somewhat reactionary, but I really dislike their products.
My System SpecsSystem Spec
27 Dec 2009   #10
InternetLord

Windows 7 Eternity Build 7600 RTM Activated x86
 
 

Quote   Quote: Originally Posted by seekermeister View Post
My first reaction, anytime that I see the word Symantec, is to uninstall it. This may be somewhat reactionary, but I really dislike their products.
agree. their products are notorious for eating system resources. plus you can get cheaper better products.
My System SpecsSystem Spec
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