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Windows 7: CPU at 90% average/system interrupts

07 Jun 2009   #1

Windows 7
CPU at 90% average/system interrupts

The title says it all. I have a MSI R4830 graphics card that runs fine with XP. Windows 7 runs good without the card (Dual boot system). Windows 7 seems to not like the graphics card and system interrupts in the resource monitor using up the processor. System interrupts manages the deferred proceedure calls and interupt service routines. There are some sites about eliminating recieve livelock in an interrupt-driven kernal
but these sites are a little technical for me. If there is anyone that can translate the tech talk to something more understandable I sure would like to hear from you!
One more bit of info- I did download the drivers at the top of this forum with no positive result.

My System SpecsSystem Spec
07 Jun 2009   #2

Vista Ult64, Win7600

Hi, can you post a picture from your Task manager showing all the processes that are running please, And also fill in your System Specs.
My System SpecsSystem Spec
07 Jun 2009   #3

Windows 7

I will get the system specs finished in a few more (very slow computer).

Attached Thumbnails
CPU at 90% average/system interrupts-processes.png  
My System SpecsSystem Spec

20 Oct 2009   #4

Windows 7 7600

I was having a similar issue that I discovered happened when I plugged in a wired network connection. The network I'm plugging into isn't even connected to the network and I've connected to it before in the past, this is new for me. The processes running are very few, less then 15 total, that is including AVG running.
My System SpecsSystem Spec
22 Oct 2009   #5

Win 7 Ultimate x64

I had an issue where my system would lock-up for a split second every 5 seconds or so. This was due to the excessive amount of USB devices I had plugged in, maybe an IRQ usage issue. Anywho, I eliminated some device I don't use and the issue is gone!
My System SpecsSystem Spec
18 Nov 2009   #6

Win 7 Ultimate 64

Same issue. All 4 CPUs over 90% 5-10 minutes after booting.
What did I do that caused this as it was FLYING days ago?
Installed Windows MOE Live Mesh.
Upgraded nVidia drivers.
Removed HP Laserjet P1009 (no driver for Win 7 64).
For 5 days it was aggravating to have to wait minutes for the PC.
Solved it.
I removed the MS MOE program.
Remembered that the nVidia Control Panel allows you to adjust Video Image Settings under Video, last option for me.
I selected nVidia to do it.
Rebooted and CPUs back to normal.

Hope this helps someone.
My System SpecsSystem Spec
11 Dec 2009   #7

Windows 7 home premium

Similar problem - checked resource monitor to see system interrupts were eating 85% - 100% of CPU when idle (sounded like a vacuum cleaner...). Anyway, did the nVidia drive update - no luck.

I went to HP's site to download drivers - typed in my model # (a6720f) and downloaded the Realtek driver update from 10/2009 - and that solved it.

I also went to realtek's site, and they have an update from 11/2009, but this one didn't solve it - I hope this helps someone else as well.
My System SpecsSystem Spec
11 Dec 2009   #8

Windows 7

AVG is the worst bsod causer and poor performance causer on Windows. Uninstall that and do not just disable because that will not help. Now see how great your Windows is.
My System SpecsSystem Spec
11 Dec 2009   #9

Windows 7 Ultimate 32-Bit (x86)

Quote   Quote: Originally Posted by Legacy View Post
AVG is the worst bsod causer and poor performance causer on Windows. Uninstall that and do not just disable because that will not help. Now see how great your Windows is.
I agree. If you want a good free Anti-Virus get Avira AntiVir Personal.
My System SpecsSystem Spec
11 Dec 2009   #10

Windows 7 Ultimate x86-64

Get rid of Advanced System Care and other performance improving junk. Then kill AVG and use Microsoft Security Essentials. Otherwise a clean install without excess software will fix this.
My System SpecsSystem Spec

 CPU at 90% average/system interrupts

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