How do I fix this high CPU usage svchost virus or whatever it is?

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I could not perform a Windows update even with going to the Microsoft Update site with Internet Explorer. I was unable to start the automatic update services in services.msc.

I was able to remove the Vundo Trojan with this free program called SUPERAntiSpyware which removed all the Automatic Windows Updates problems.

It can be downloaded here:
http://www.download.com/SuperAntiSpyware-Professional/3000-8022_4-10532824.html?tag=lst-3&cdlPid=10849529

I have been plagued with this issue at home and at work. My IT department gave up on my computer. HP put in a new mother board. I corrected both from this information below. I don't know exactly what it is really reppairing, but it works. Visit this URL:http://www.technibble.com/how-to-fix-svchost-using-100-cpu-memory-leak/

Hi Leo....I luckily found your web site regarding this issue when I did a google search for svchost. I have spent days with tech support to try to resolve this issue that something was using 100% of my cpu. I thought it was my internet provider...a virus...my computer...etc. One tech called me back at 3 am this morning after doing many scans to find the problem, only to tell me he could not fix it. He recommended I reformat my computer. I started to google svc this morning and came accross your site. I followed your instuctions to download the Process Explorer and to run it to find out what the problem was. When I discovered through that what was using 100% of my cpu...I immediately knew that was my problem. It showed me only 1 .dll file to be the problem, and it was my NEW HP printer software. I called HP, and a tech helped me delete files and re-install my printer...and guess what...my cpu went down to 2%!!!!!!!!!!Thank you so much, and I wish others success in solving their issue with svchost 100%cpu problem

I'm not seeing any cpu problems when I run task manager, but my system slows down just the same. I have noticed that when I open an eBay tab ( in Firefox )thing go down faster, so now I don't leave eBay tabs open any longer than I need to.

Hi Guys

im new here so bear with me i have always been ok with PC's and i could build one and strip one just fine BUT laptops are alien to me and this scared me tonight because....

im a DJ and tonight i was at a gig, 10 mins beofore i start i turned my laptop on and the first thing i noticed is the windows XP blue loading bar is moving at the speed of light! then it loads in to windows. the clock was FLYING round i thought it was strange but thought it would settle... i opened my music player and things go worse the muisc was all distorted like there wasnt enough memory to support the player i hit C-A-DEL and the CPU usage was going up and down like a yoyo and jumping from 0 to 100% like wildfire i tryed re-booting no diffreence! i restarted and went in to BIOS the system clock in Bios was doing the same i tryed 2 more resets and then all of a sudden PRESTO like nothing had happend its all ok again...

i just dont get it!!! any thoughts???

kindest

Ben

I have been getting CPU spikes to 100% at regular intervals. They seem to be related to my network - when I disable the network, the spikes stop. My network has 2 computers, one connected wirelessly and one connected by cable. Task manager showes that the network itself is not using a lot of CPU

Hi,
I've also been struggling with the problem of SVCHOST usurping 100% of my CPU - I tried many of the typical listed solutions like disabling windows update etc, all to no avail. However, I just found the culprit process that was responsible - it was none other than DNSCACHE !
Using the command "Tasklist /SVC" from CMD Prompt, I was able to match the PID of the problem SVCHOST process to object that was using it - in my case, it was DNSCACHE. What I guess was occurring was that after every start-up, when trying to connect to internet, DNSCACHE 1st wanted to update - this could take quite some time in some instances, and as I've discovered, was completely un-neccessary. The fix was to STOP the DNSCACHE service, then set it to DISABLED, all within LOCAL SERVICES. Problem is now gone, and internet access is fully functional. Hope this is of some help to others with similar problem.

Thank you Leo! This actually worked! I downloaded the Process Explorer and at once was able to identify the PUA causing the potential problem of 100% CPU usuage. The tool is so useful and with my newly purchased McAfee Anti-Virus, I'm assured that PUAs and Spyware will find it difficult gaining a strangle hold on my laptop. Adios! Gracias!

The key for me was to use Process Explorer. This is a wonderful tool that will allow you to isolate which service is responsible for the 100% cpu usage. In may case, it was related to HP Device Network Support, which is for my HP PRINTER!!! After disabling this service, my 100% cpu useage issue disappeared immediately (which I could tell because I was running Task Manager and looking at the Processes tab sorted by CPU...I also enabled Process Identifier column, also referred to as PID, to find out what ID was responsible). Many thanks to Leo!

The fix you offer up here, disabling WU merely shifted the problem around for me.

At first Svchost/wuauclt was the app that was hanging at 99% CPU usage. In turn I disabled WU and Windows Firewall, which stopped the machine from immediatley shooting up to 100% processor usage on startup.

But then another app would, after a few minutes, move in and take the place of those two. Sometimes it is LSASS, sometimes it is WINLOGON, and sometimes it is an app related to AVG Antivirus which I just installed after a number of tries. It can't complete the virusscan because even if I kill other processes, eventually it gets to LSASS which cannot be killed. I've hung at 99% processor usage with SVCHOST (Services), wuauclt, WINLOGON, LSASS, and applications related to Process Explorer and AVG.

Additionally I cannot boot the machine in Safe Mode because of a blue screen error that says that the video driver can't initialize.

So if I can't boot in safe mode and random applications keep causing the machine to hang at 100% processor usage what am I left with?

Netstat shows that there are connections to the machine (listening if I remove my network cable) on ports 135, 445 etc.

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