Svchost.exe using 100% of my computer memory

I have a problem with my computer running slow and freezing up. I am using windows xp and firefox. I open firefox and sometimes i can't even get my homepage to open up. When it opens up i try to go to a site it freezes up for a second and it does this everytime i do something on the internet like scroll down or up, type something or try to go to a site it freezes up. I seen on task manger that svchost.exe using 100% of my computer.
I tried windows uopdate agent 3.0 x86 for windows xp and its says already installed.
I tried windows xp kb927891.exe and it says service pack version is newer than the update you are applying no need to update.

Do you think that is my problem and how do i stop it I know I can't delete it so how do I stop it from using 100% of my computer?

Its most likely viral.
As in you have a virus/trojan or some other infection.
What antivirus are you using?
I am not too sure what windows update agent is but,
If you click the Start button, Then click Programs you should
see Windows Update right at the top. Use that to update.
If you have trouble finding it that way.
Go to Internet Explorer, then under Tools Is Windows Update

While I have never used Firefox, I imagine it allows you do disable add-ons.

Do so - ALL of them.

Any change?

I already tried windows update and that didn't help. I already did a virus scan AVP 2009 spyware doctor and spybot and not help. Svchost.exe still using 100%

Here is what I would try first.

Download and install this:

http://www.microsoft.com/downloads/d...displaylang=en

Reboot after install and post feedback.


Of course you want this file: "WindowsXP-KB942288-v3-x86.exe" There is more than one to download make sure you select the file I mentioned for the version of your operating system.

Thanks

Quote:

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Originally Posted by JonDaviS

I already did a virus scan AVP 2009

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What software specifically is this please? The only things I'm aware of answering to AVP 2009 are malware (fake antivirus):

AntiVirus Pro 2009:

http://www.bleepingcomputer.com/viru...virus-pro-2009

Or AntiVirus PC 2009:

http://www.bleepingcomputer.com/viru...ivirus-pc-2009

I think that might have done the trick the download you told me to install from microsoft let me try it for a couple of days and i will let you know if i had any problems

I downloaded WindowsXP-KB942288-v3-x86.exe and thought that did the trick but didn't. Svchost.exe is still at 100% what can i try now? thanks

If your using AVP 2009 then you are using a fake antivirus I think.
It likely is the reason you are running 100%.
2 things
Download Malwarebytes (www.malwarebytes.org) left side free
Download Microsoft Security Essentials
http://www.microsoft.com/security_essentials/

Make sure that you update them completely and do a "FULL SCAN" with both of them

Try this...

Start Menu > Run
type: services.msc
(& press okay)

Disable the service Automatic updates & Background Intelligent Transfer Service. Reboot the computer & tell me if it corrected the problem.

To disable the service select the service from the list and select properties. Then General Tab. Set start-up type to disable. Also select stop. See if that fixes it let me know results.

I disabled Automatic updates & Background Intelligent Transfer Service and rebooted my computer. Svchost.exe is still at 100%. I don't know what else to do. I done tired everything I can think of. Do u think doing a system restore will solve my problem or do u know anything else i can try without having to do a system restore?

Well... I'd maybe try running some anti-spyware and antivirus software on your computer.

I recommend - Combofix, Malwarebytes for Anti-Spyware and for AntiVirus NOD32.

Best to run your scans in safemode. I've seen a corrupt windows installer as well as automatic update service get carried away using 100 percent of the CPU before... in this case i think its more likely some type of rogue infection. I wouldn't waste my time with a system restore. Start doing file system scans.

You can check for things that start in addition to Windows.

Be off-line (off the internet).

Click start, run, type msconfig and press enter.

Look under Startup - uncheck EVERTHING!

Look under Services, check the box to Hide All MS Services, and again, uncheck EVERYTHING left.

Reboot.

Is the svchost running high cpu still?

I tried some file system scans and nothing helped. I also tried to check for things that start in addition to Windows. Nothing is working what can i try to do now?

I am about to the point to do a system restore cause i tried everything. I don't know what else to try and I hope it works.

Quote:

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Originally Posted by JonDaviS

I tried some file system scans and nothing helped. I also tried to check for things that start in addition to Windows. Nothing is working what can i try to do now?

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So, you tried my suggestion for basically stopping all unecessary programs and services through MSCONFIG and re-booted and this svchost.exe is still using 100% ?


Or what?

Quote:

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Originally Posted by JonDaviS

I tried some file system scans

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What file system scans? What were the results? Really, you're making it difficult for us to do much to help you. What antivirus do you actually have on your system? You haven't responded to either me or Ferrit warning that the AVP2009 you mentioned appears to refer to malware - if you have malicious software installed on your computer, you either have to follow the procedure to remove it or wipe and re-install.

I will note here that a number of people refer to Kasperky Spyware Doctor 2009 as 'AVP 2009' largely because the engine is AVP.exe - confuses the issue I am sure.

http://74.125.93.132/search?q=cache:...&ct=clnk&gl=ca

Yes, that's the type of confusion I'm hoping to avoid. Without more information, we're guessing a lot.

There's the odd chance that it could be an infection in the MBR which wouldn't necessarily be detected by Antivirus software. maybe try downloading and running a program called DR WEB Cureit. That works well for finding and elminating mbr infections. Even combo fix sometimes can't remove mbr infections even though it has the tool built in to do so.

Dr. Web Cureit is a good tool and may do that for you. If in the event it doesn't work you could try the GMER tool. Silly as it sounds you should also double check the startup folder. Sometimes a persistent little nasty file can be tucked away in there and be missed by all types of scanners.

Can anyone please help me thanks

Have you even tried the last few suggestions that came up?