i am running windows xp pro with a gigabyte ga-kn8s 939ultra motherboard anthlon 64x2 duel core processor 3800 and 4 gig of kingston hyperx i have instaled sp3 and noticed that my cpu is 30-40% with no programs running i went into task mrg and it says sys idle at 99% but it says i am running 30-40% it was working fine b4 update i have re-formated my system 3 times and still get 30-40% after i install sp3 update what is wrong is it me? LOL i am running avg full and it is up to date no i have wiped the system clean and there is no problems with hard drive

What anti-virus application or security suite is installed and is your subscription current? What anti-spyware applications (other than Defender)? What third-party firewall (if any)? Were any of these applications running in the background when you installed SP3?Has a(another) Norton or McAfee application ever been installed on the computer (e.g., a free-trial version that came preinstalled when you bought it)?~Robear Dyer (PA Bear) ~ MS MVP (IE, Mail, Security, Windows & Update Services) since 2002 ~ Disclaimer: MS MVPs neither represent nor work for Microsoft

i am running avg full and it is up to date no i have wiped the system clean and there is no problems with hard drive

Was AVG running in the background when you installed SP3?Did a Norton or McAfee free-trial come preinstalled on the computer when you bought it (and which would have been reinstalled, but invalid, when you reinstalled Windows)?Speaking of reinstalling Windows, did you do a Repair Installs or did you format the HDD & then do clean installs? 4 steps to help protect your new computer before you go online http://www.microsoft.com/security/pypc.aspxAfter a clean install, you will have the equivalent of a "new computer." Did you take care of everything on the above page before otherwise connecting the machine to the internet or a local network (i.e., other computers) and before connecting an external drive (include flash drives & SDCards) to the computer?==============================================WinXP SP3 - Read all prerequisites for a successful installationhttp://msmvps.com/blogs/harrywaldron/archive/2008/05/08/windows-xp-sp3-read-all-prerequisites-for-a-successful-installation.aspxFree unlimited installation and compatibility support for WinXP SP3 was available from 14 April 2008 thru May 2009. Such support will cost you US$59 or higher per incident now.Note: Support for WinXP SP2 ends today, Tuesday, 13 July 2010. After that date, computers running WinXP SP2 "will no longer receive software updates from Windows Update" until SP3 is installed. • What does it mean if my version of Windows is no longer supported? http://windows.microsoft.com/en-us/windows/help/what-does-end-of-support-mean~Robear Dyer (PA Bear) ~ MS MVP (IE, Mail, Security, Windows & Update Services) since 2002 ~ Disclaimer: MS MVPs neither represent nor work for Microsoft

No i wiped the whole hard drive clean no repair and put windows on and all updates b4 i installed antivirus

How long was the computer connected to the internet (or other computers) before AVG was installed & updated?How to perform advanced clean-boot troubleshooting in Windows XPhttp://support.microsoft.com/kb/316434See if clean boot troubleshooting helps you determine what's causing these spikes. (I suspect it's due to a hijackware infection but YMMV.)~Robear Dyer (PA Bear) ~ MS MVP (IE, Mail, Security, Windows & Update Services) since 2002 ~ Disclaimer: MS MVPs neither represent nor work for Microsoft

i have wiped the hd clean and found out that i install all updates up too sp3 but not sp3 the system is ok very low cpu 1-2% i set restore point and download and install sp3 and restart windows that is when i have a high cpu useage i even put brand new hd and tryed it it does the same thing no virus no other stuff put on my computerit does it only after i install sp3 i can not play a game b4 it freezes my computer

I can't help you if you don't answer my questions the first time I ask them.There is a very good chance that you are seeing the effects of a hijackware infection!NB: If you had no anti-virus application installed or the subscription had expired *when the machine first got infected* and/or your subscription has since expired and/or the machine's not been kept fully-patched at Windows Update, don't waste your time with any of the below: Format & reinstall Windows. A Repair Install will NOT help!Microsoft PCSafety provides home users (only) with no-charge support in dealing with malware infections such as viruses, spyware (including unwanted software), and adware.https://support.microsoft.com/oas/default.aspx?&prid=7552&st=1Also available via the Consumer Security Support home page: https://consumersecuritysupport.microsoft.com/Otherwise...1. See if you can download/run the MSRT manually: http://www.microsoft.com/security/malwareremove/default.mspxNB: Run the FULL scan, not the QUICK scan! You may need to download the MSRT on a non-infected machine, then transfer MRT.EXE to the infected machine and rename it to SCAN.EXE before running it.2a. WinXP => Run the Windows Live Safety Center's 'Protection' scan (only!) in Safe Mode with Networking, if need be:http://onecare.live.com/site/en-us/center/howsafe.htm2b. Vista or Win7=> Run this scan instead: http://onecare.live.com/site/en-us/center/whatsnew.htm3. Now post the requested logs in an appropriate forum for assistance by an expert in such matters. DO NOT SKIP THIS STEP!!I can recommend the expert assistance offered in these forums: http://spywarehammer.com/simplemachinesforum/index.php?board=10.0, http://www.spywarewarrior.com/viewforum.php?f=5, http://www.dslreports.com/forum/cleanup, http://www.bluetack.co.uk/forums/index.php, and http://aumha.net/viewforum.php?f=30If these procedures look too complex - and there is no shame in admitting this isn't your cup of tea - take the machine to a local, reputable and independent (i.e., not BigBoxStoreUSA or Geek Squad) computer repair shop.I am no longer Watching this thread. Good luck.~Robear Dyer (PA Bear) ~ MS MVP (IE, Mail, Security, Windows & Update Services) since 2002 ~ Disclaimer: MS MVPs neither represent nor work for Microsoft