Computer 'Lagging'

By Rexli
Oct 23, 2008
  1. Hi,

    I've been recently having an issue with my PC that has got me completly stumped.

    When it's been turned on for around 30 minutes everything becomes extremely laggy, sound, picture, mouse, until nothing will either open or close. Task manager wont open, I cant shut down/reboot ect ect.

    After a hard reset it will take around 10 minutes to get past the windows loading screen and 9 times ouit of 10 i will have the same problem (mouse lagging everywhere until nothing will open) if i get that far. Sometimes to fix the issue i have to hard reset the PC and unplug power to the machine, and i usually leave it for around 10 minutes and then it boots up its fine. Although this doesnt fix it 100% of the time and sometimes it's just down to pot luck.

    If i check the event viewer i can see an entry just before i have the problem that says ;

    "Event 4, Kernel-Processor-Power" (one for each core)

    I've searched around for anything that could shed any light on this problem and have found nothing, so i thought i would bring it here.

    PC Spec

    Windows Ultimate x32
    2x 8800GTX
    2GB RAM
    Q6600 @ 3.00ghz
    nForce 780i SLI

    Any help is appreciated.


  2. CCT

    CCT TS Evangelist Posts: 2,653   +6

    Check for cpu overheat.
  3. Rexli

    Rexli TS Rookie Topic Starter

    I forgot to mention that when it's rebooted and working correctly it will work for hours so i'm not sure it's my CPU overheating.

    I'll check it anyway though.

    Thanks for the comment.
  4. CCT

    CCT TS Evangelist Posts: 2,653   +6

    While checking both with sensor readouts and looking inside for dust, etc, I suggest you also check all connections.

    You might want to run a ram test program after everything else.
  5. kimsland

    kimsland Ex-TechSpotter Posts: 14,524

    Run CCleaner next time it lags.
    Also run Memtest for 7 Passes, to test your Ram
  6. Rexli

    Rexli TS Rookie Topic Starter

    Will give that a go.


    P.S Congratulations on 10000 posts ;).
  7. gguerra

    gguerra TS Maniac Posts: 317

    Try running in safe mode to see if the same happens, if it doesnt it may be malware. Scan and clean in safe mode with malwarebytes and superantispyware
  8. Tedster

    Tedster Techspot old timer..... Posts: 6,000   +15

  9. Rexli

    Rexli TS Rookie Topic Starter

    Since i made this topic i've taken my PC to work and given it a blast of our engineers air compressor to clear out all the dust and this seems to have done the trick (touch wood). Apart from 1 or 2 random lock ups the 'laggyness' has gone. Thanks for all the help!
  10. Tedster

    Tedster Techspot old timer..... Posts: 6,000   +15

    overheating can cause all kinds of issues.
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