Close

Results 1 to 11 of 11
  1. #1
    DF Super Moderator
    DejaVu's Avatar
    Join Date
    Nov 2005
    Location
    Suffolk
    Posts
    9,157
    Thanks
    1,875
    Thanked:        4,075
    Karma Level
    998

    Default Old XP PC - Reinstalled. 100% CPU Usage?

    Just reinstalled a PC for my neighbour as it was running incredibly slow.
    It's not the best computer in the world as she only uses it for Facebook!

    It's a Pentium Celeron with 768Mb RAM.
    It's fine for the first few minutes, then it almost locks up.

    I managed to load Task Manager (which took 15 minutes to load) and it has the process 'System' using 99% on the CPU. I've looked about it and some are saying to update the machine, some say it's anti-virus related.

    Running Avast Free/Malwarebytes and XP Pro with SP3 - and almost all updates are done.

    Anyone got any ideas?


  2. #2
    DF Super Moderator Over Carl's Avatar
    Join Date
    Apr 2006
    Location
    London
    Posts
    13,282
    Thanks
    4,452
    Thanked:        1,833
    Karma Level
    1335

    Default Re: Old XP PC - Reinstalled. 100% CPU Usage?

    I wouldn't use xp on anything less than a gig - we have a few pc's at work still with 512Mb and they are stupidly slow, not quite as bad as yours but not far off. As much as 512 was a fair bit when xp came out, the service packs and updates bloat it a bit.

    It could be worth using a trimmed version of xp, windows fundamentals for legacy pc's, trimming your xp installation yourself using nlite, or even using server 2003 instead.

  3. #3
    DF VIP Member wakadoo's Avatar
    Join Date
    Nov 2002
    Location
    notts
    Posts
    3,341
    Thanks
    139
    Thanked:        366
    Karma Level
    477

    Default Re: Old XP PC - Reinstalled. 100% CPU Usage?

    just read what process is using the 100% and stop it running..

    then stop it starting up again in system configuration..
    [Only registered and activated users can see links. ]

    Why does "fat chance" and "slim chance" mean
    the same thing?

  4. #4
    DF PlaYa drdude's Avatar
    Join Date
    Oct 2002
    Location
    Putney
    Posts
    949
    Thanks
    72
    Thanked:        40
    Karma Level
    301

    Default Re: Old XP PC - Reinstalled. 100% CPU Usage?

    If you're confident there's no BS on the PC then the first thing I'd try is disconnecting it from the internet and temporarily disabling/uninstalling Avast to see if its real-time protection is causing high CPU cycles. The full version of Malwarebytes (but not the free edition) also has real-time protection so disable that too. If Avast is the problem then switch to Microsoft Security Essentials.

    Other things to consider include the usual boring crap: is the BIOS up to date, have you installed latest chipset drivers, etc.

  5. #5
    DF Super Moderator
    DejaVu's Avatar
    Join Date
    Nov 2005
    Location
    Suffolk
    Posts
    9,157
    Thanks
    1,875
    Thanked:        4,075
    Karma Level
    998

    Default Re: Old XP PC - Reinstalled. 100% CPU Usage?

    I've got loads of RAM I can put into it. But it doesnt make any difference. System process (Not System Idle Process) hogs 99% of the CPU.

    I also know people using PC's with XP SP3 with 256Mb RAM still, with no real issues - albeit a bit slow.


  6. #6
    DF Super Moderator
    DejaVu's Avatar
    Join Date
    Nov 2005
    Location
    Suffolk
    Posts
    9,157
    Thanks
    1,875
    Thanked:        4,075
    Karma Level
    998

    Default Re: Old XP PC - Reinstalled. 100% CPU Usage?

    Just about to run Belarc to find the correct drivers for the chipset etc.

    I'm on it at the moment and everything seems fine. I'll see if it hangs again in the next few minutes. Windows Update's might have sorted the problem... Wotch this space.


    Quote Originally Posted by wakadoo View Post
    just read what process is using the 100% and stop it running..

    then stop it starting up again in system configuration..
    Stopping the 'System' process would surely kill windows.


  7. #7
    DF PwNagE ant3b's Avatar
    Join Date
    Apr 2004
    Location
    United Kingdom
    Posts
    8,130
    Thanks
    600
    Thanked:        165
    Karma Level
    628

    Default Re: Old XP PC - Reinstalled. 100% CPU Usage?

    maybe cpu is on its way out.. overheating? dirty?

  8. #8
    DF PwNagE ant3b's Avatar
    Join Date
    Apr 2004
    Location
    United Kingdom
    Posts
    8,130
    Thanks
    600
    Thanked:        165
    Karma Level
    628

    Default Re: Old XP PC - Reinstalled. 100% CPU Usage?

    I Don't think you can stop the system idle process

  9. #9
    DF PiMP marvyboy's Avatar
    Join Date
    Dec 2002
    Location
    scotland
    Posts
    422
    Thanks
    13
    Thanked:        64
    Karma Level
    339

    Default Re: Old XP PC - Reinstalled. 100% CPU Usage?

    was this a fresh install or a repair install?

  10. #10
    DF Super Moderator
    DejaVu's Avatar
    Join Date
    Nov 2005
    Location
    Suffolk
    Posts
    9,157
    Thanks
    1,875
    Thanked:        4,075
    Karma Level
    998

    Default Re: Old XP PC - Reinstalled. 100% CPU Usage?

    Fresh install. Windows XP SP2 Pro - Upgraded to SP3 straight away and all updates have no complete.

    I ran Process Explorer and it did go to 100% whilst installing programs. But now all is done, it seems fine. I'm going to use the machine for the next hour or so to test to see if anything else causes the problem.


  11. #11
    DF Jedi coin-op's Avatar
    Join Date
    Mar 2001
    Location
    About
    Posts
    2,703
    Thanks
    73
    Thanked:        218
    Karma Level
    427

    Default Re: Old XP PC - Reinstalled. 100% CPU Usage?

    One process that is a complete hog is wau something - automatic update client. I saw a machine on its knees when that was running and it dropped to about nowt when I disabled it. If it's a fresh install it may be that there are loads of patches etc that the auto update is getting data on.

Similar Threads

  1. [HELP] RAM Usage @ 40%
    By Bilbo_baggin in forum PC Problems
    Replies: 6
    Last Post: 19th April 2013, 10:10 AM
  2. Log CPU Usage in VB.Net
    By Goldberg in forum Programming
    Replies: 9
    Last Post: 29th September 2006, 09:52 AM
  3. CPU Usage 100%
    By Elbow in forum PC Problems
    Replies: 10
    Last Post: 3rd April 2005, 12:20 PM
  4. CPU Usage
    By Knight-templar in forum PC Problems
    Replies: 1
    Last Post: 30th October 2003, 11:32 PM

Social Networking Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •