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Windows Vista: 100 percent CPU usage caused by SVCHOST process, need help
- 4/24/09 5:12 PM
An exception
by MNBSwamy - 4/27/09 11:07 PM In reply to: Definately Norton by nrogers69I am also on XP and the problem is accute. But I am not having Norton on my machine.Anyway thanks for sharing your experioence so that I can try Mc'Cafe also.
MNBSwamy
SVCHOST and SCVHOST
by DADSGETNDOWN - 4/17/09 6:30 PM In reply to: 100 percent CPU usage caused by SVCHOST process, need help by Lee Koo (ADMIN)
Don't know if this helps but I recall a Situation where there was a
SCVHOST, instead of the normal SVCHOST.
That would be some sort of infection I believe and there are fixes here on cnet and Virii, spyware, malware sites.
Hope this isn't it. 
Even though it's a pretty easy fix.
svchost
by sian4fro - 4/17/09 7:12 PM In reply to: 100 percent CPU usage caused by SVCHOST process, need help by Lee Koo (ADMIN)
another interested reader also would appreciate response
here's the solution
by chazzsubscribe - 4/17/09 9:58 PM In reply to: svchost by sian4froThere will be several instances of svchost running. As others have said it's a generic service that runs when some other application, service or even hardware is running.
YOU NEED TO FIND OUT WHAT IS CAUSING SVCHOST TO USE SO MUCH CPU CYCLES.
Here's how. Microsoft has a free tool you can download, called Process Explorer. It's sort of like Task Manager but when you hover over each instance of SVCHOST, it will show you the associated tasks tied to each one. One innocent SVCHOST could be your modem. The "bad" one may be some software trying to check for updates via the internet. You could then disable that software and try to reinstall it.
it's NOT SVCHOST that is the problem. It's the underlying software, service, or even hardware that is causing that instance of SVCHOST to run so much.
Do a google search for Process Explorer. It's free from Microsoft. Download it and run it. See which SVCHOST is running the most and what is causing it.
here's the link
by chazzsubscribe - 4/17/09 10:21 PM In reply to: here's the solution by chazzsubscribehttp://technet.microsoft.com/en-us/sysinternals/bb896653.aspx
Windows Services using all CPU cycles...
by MarkinTO - 4/24/09 9:20 PM In reply to: here's the solution by chazzsubscribeI've found that you 'must' have the latest version of Microsoft's Net Framework installed.
You might not have installed it, as a Windows Update or perhaps 'declined' that update option at some time?
You should have 3.5 SP.1
This allows for smooth up-dates to your OS.
It might 'not' fix your problem but, surely won't hurt to have this update!
Mark
Thanx for SVCHOST problem solution.
by AHMADHAIDER - 4/26/09 8:09 PM In reply to: here's the solution by chazzsubscribeThanx again, for your solution, it worked much better for me.
Now my computer has become more faster after installing the Process Explorer.
I was not known to that software before this.
Thanx again.
thank you very much!
by matplin - 4/27/09 6:49 AM In reply to: here's the solution by chazzsubscribeI wonder why I did not check it before, while bothered every time by the CPU overload.
Thank you again!
SVCHOST running at full CPU
by glenn9376 - 4/17/09 7:20 PM In reply to: 100 percent CPU usage caused by SVCHOST process, need help by Lee Koo (ADMIN)
if SVCHOST run at that speed when you are at idle it may be a trojan , and it sends outbound info such as passwords and such to another user. i sugest you run THREATFIRE or some such security program to catch it. or try a pre-boot scan using AVAST. hope this helps
SVCHOST running at full CPU
by vattan2005 - 4/24/09 8:18 PM In reply to: SVCHOST running at full CPU by glenn9376Yeah, Threatfire is awesome behaviour-based software. That along with PCTools does the job for me.
See attached website for a description of SVCHOST process
by JimLic - 4/17/09 7:24 PM In reply to: 100 percent CPU usage caused by SVCHOST process, need help by Lee Koo (ADMIN)
You will probably find this is your problem if you go to this website:
http://download.cnet.com/8301-2007_4-9865052-12.html.
Not sure if you have XP and have been religious about maintaining your updates, but Windows will eat your resources if you allow it to.
100 percent CPU usage and SVCHOST
by robsb - 4/17/09 7:46 PM In reply to: 100 percent CPU usage caused by SVCHOST process, need help by Lee Koo (ADMIN)
SVCHOST is a process used by Norton. There is a known issue with this service and an incompatibility with Outlook Connect to Windows Live. Until the issue is resolved, Norton recommends either removing Outlook Connect or Nortons Add On Pack. I removed the Add On pack and the problem went away.
excellent question
by benhartman - 4/17/09 7:56 PM In reply to: 100 percent CPU usage caused by SVCHOST process, need help by Lee Koo (ADMIN)
There are these nasty little (mostly legitimate, but annoying,) processes that run inside svchost processes.
Download a nifty utility from Microsoft (they usually have the cool tools to uncloak their own bad designs) called ProcessExplorer (http://technet.microsoft.com/en-us/sysinternals/bb896653.aspx) that shows you what actual processes are running inside.
In my case, it's usually Hewlett-Packard bloat-ware related to my hp printers. If it is something like a confused process, kill it by highlighting it and pressing Delete. (may have to run processexplorer by right-clicking on the icon and running as administrator)
Warning: It could be a fileIndexer from Google Desktop or Microsoft Index, an anti-virus scan or a backup process that is hogging resources, but they're not supposed to.
In my case, there's nothing an HP process could be doing that is so important.
Zone alarm is the problem
by Golden swan - 4/18/09 4:01 AM In reply to: excellent question by benhartmanI have recently had this same problem, at first I thought it was a trojan, but it turned out to be a software conflict with the new versions of Zone Alarm & Avira 9.0 Antivirus.. I was loosing connectivity on my network after 3-5 mins and the computer was freezing svchost & DPC & hardware interupts were spiking the CPU to 98-100% I had to reset the network adapter for the CPU to return to normal, I unistalled Zone Alarm and all has been well for the last 3 day hope this helps...
100 percent CPU usage caused by SVCHOST process, need help
by pervaiz41 - 4/17/09 8:00 PM In reply to: 100 percent CPU usage caused by SVCHOST process, need help by Lee Koo (ADMIN)
James T
Following link will provide you a complete answer to your problem. I was also baffled by this so I searched the internet and the found the answer. Good luck. Pervaiz
http://www.howtogeek.com/howto/windows-vista/what-is-svchostexe-and-why-is-it-running/
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