Computer is slow, laggy

By Skorpionas · 5 replies
Jul 2, 2009
  1. Hello,
    About moth ago, my computer starded to work slowlys. I can't listen music normally, it goes lag as when as I try to do something else in screen.(even some times sound goes out, I had to overload song or clip). I cant play games. HDD temperature holds on ~45 C" and other details seems to be cold every time i use PC. I have reinstalled windows few times, formated C (OS) drive but no possitive results.. Windows and av (nod32) are updated. CPU sometimes raises up to ~50%, and descends after a second and it repeats frequently. Sometimes my mouse dissapears and emerges after few seconds... Sometimes PC just freezes, I have to do rr.

    I have replaced graphic card, new supply unit, I have checked ram's wiht memtest68 - 0 errors, I have regenerated HDD - 0 bad sectors, I have done complete scan with AV - some "pacific viruses". I have cleaned registry with some programs, Cleaned cookies and other sh** with CCleaner. I have defragmented both particions.

    For example now, after troubelsome ~1 hour, PC works good, but I know, this is not for a long.

    Computer summary

    Waitting for some expert advices :)
  2. SNGX1275

    SNGX1275 TS Forces Special Posts: 10,742   +422

    Not sure how expert this advice is, but if you haven't already I would make sure all your drivers are up to date, including chipset drivers. If that does not fix the problem I would get a program (such as speedfan) and make sure your CPU temperature isn't crazy high - CPUs will throttle to slow speeds if they are getting too hot. If your CPU is getting too hot you'll have to remove the heatsink, clean it with a high percentage isopropyl alcohol, then reapply some thermal paste/compound and reseat the heatsink.
  3. aqua

    aqua TS Rookie Posts: 57

    you said you formated hard drive..but in this case you need to wipe it out...use dban,read instructions.
    did you run antivirus.?..malwarebtes?.clean internet traces with something like ccleaner,which havs a registry cleaner too.
  4. SNGX1275

    SNGX1275 TS Forces Special Posts: 10,742   +422

    I don't know that something like dban is necessary here, as long as there was a format done during the Windows install it should be fine. I can't think of anything in the last 8-10 years that would come back after a simple format to reinfest a Windows installation (and I'm not sure I ever have, but I remember rumors of such a thing back in the mid 90s).

    If by some small chance it is an actively recurring infection of some sort the most likely candidates I'd guess would be an infected computer on his LAN, or infected external drive that is attached after (or simply an infected internal that isn't being formatted on a clean install of windows).

    I don't think it is an infection of any kind though, with the limited information we have now my guess is heat.
  5. Skorpionas

    Skorpionas TS Rookie Topic Starter Posts: 16

    Thank you for answers,
    I have allready changed thermopaste above CPU for a few times during this problem period.
    Here is temperatures after 1,5 hour PC usage:

    Motherboard 38 °C (100 °F)
    CPU 32 °C (90 °F)
    Aux 42 °C (108 °F)
    GPU 46 °C (115 °F)
    HDD WDC WD1600JS-00MHB0 39 °C (102 °F)

    I often check heats.
    As you see it's OK , and after some 6 hours usage it all would raise slightly.. In my opinion, heat is not the problem. If it would be an a point, PC would'nt be logy at the initially (start) of work.

    By the way, I haven't mentioned, when OS still doesn't loaded, sometimes I get black screen, and there is written "check your hardware or software bla bla bla" (I dont remember exactly). And I have to relay my RAM chips to load windows.
  6. Tedster

    Tedster Techspot old timer..... Posts: 6,002   +15

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