CPU usage goes way up during idle in Win 7

Amd Phenom ii x4 965 quad core processor
March 24, 2010 at 11:47:51
Specs: Windows 7 64-bit, AMD 965BE Quad
I have an AMD Quad 965BE, and i've noticed that when the computer is idle and i'm not using it, the CPU fan speeds up a great deal due to heavy CPU usage. I'm wondering if this is due to some service running in the background on Win 7 64-bit only during idle periods. It's a clean install so it shouldn't be anything i've loaded on that is doing it.

While i'm using it, my CPU runs at about 86F and the CPU fan is inaudible. But when i'm away from the computer for a while, I can hear the CPU fan making a lot more noise due to being higher RPMs. When I get back on the computer, I check the temp immediately and it shows 105F. But immediately after I start using the computer again, the CPU load dies down, the temp cools, and the fan speed slows down again.

I don't like this because the stock fan makes a noisy whine at high RPMs and I also don't like the thought of my computer running overtime when i'm not using it. Anyone know what the culprit could be?


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#1
March 24, 2010 at 15:22:05
They have a built in resource monitor to see what is causing it. Use it to see what is going on.

Playing to the angels
Les Paul (1915-2009)


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#2
March 24, 2010 at 15:44:34
When I check the resource monitor, it shows only 1-2% CPU usage total, yet the maximum frequency is at 100% and the temperature continues to climb higher and higher as I watch and fan reaches higher and higher RPMs. I don't understand why that is happening.

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#3
March 24, 2010 at 20:34:00
Download Process Explorer from Microsoft and install. It can tell you much more about what processes are running on your computer than even the newer task manager can, and it also lets you shut them down. Look for anything that you personally did not install and is not needed for windows. I suspect you inadvertently are participating in a shared processing network that uses your computer's downtime to help with massive calculations (usually a university or SETI like project). Check also add-remove programs. Or you simply have an infection that you will need to scan for (in this case try it in safe mode).

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#4
March 24, 2010 at 21:21:55
Ok, it appears to be the service defragsvc that is at fault. It seems to kick on consistently after about 15-20 mins of the computer being idle and is ramping up the services cpu usage 25% and keeping it there. This is making the processor heat up and the fans kick in..

What I don't understand is that the defrag settings are set to only run defrag once a week, and at night no less. And it's not due to run until tomorrow, yet it's been doing this all week. This doesn't seem normal but I haven't modified it since installing win 7 last week. I'm tempted to just disable the service but i'm curious why it's doing this.


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#5
March 25, 2010 at 00:33:13
Step 1: Find defragsvc.dll Path with Windows File Search Tool

1. Click Start, and then click Search; select All files and folders in the Search Companion window.

2. In the "All or part of the file name" section, type in the file name "defragsvc.dll".

3. In the "Look in" section, select "Local Hard Drives" or "My Computer", and then click "Search" button.

4. When Windows search is complete, highlight and right-click on the file "defragsvc.dll" that you want to delete and select "Delete". Alternatively, you can select the file and press the "Delete" button on your keyboard.

You may also stay on the "In Folder" and note down the file path of "defragsvc.dll" on your clipboard, as the file path may be needed to delete defragsvc.dll in the following manual removal steps.

Step 2: Remove defragsvc.dll Processes with Windows Task Manager

1. Press the combination keys CTRL+ALT+DEL or CTRL+SHIFT+ESC to open the Windows Task Manager.

2. Under the tab Processes, search for "defragsvc.dll" process by name from the list of "Image Name".

3. Select the "defragsvc.dll" process and click on the "End Process" button to stop it.

Step 3: Check for and Delete Other defragsvc.dll Files

1. To open the Command Prompt window, click Start and then click Run; type in cmd and then press the "OK" button.

2. In the emerged window, to change directory, type in "cd name_of_the_folder" (for example, cd C:\Spyware-folder); press Enter button.

3. Type in "dir /a" and press Enter button to display the folder's content even the hidden files.

4. Once you find the file you're looking for, type in "del name_of_the_file".

i hate computers!
but cant help myself....


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