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Thread: Computer problems

  1. #1
    Senior Member flynnaus's Avatar
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    Computer problems

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    OK, some opinions please

    My computer doesnt like the cold. Seems to be OK in summer. Lately, failry noisy start up and froze at startup usually at the log in screen(Win XP) and then often again once it logs in. Once it warms up, it is OK - I can reboot without crashing at startup.

    I thought power supply at first as because of the fan noise and the coldness factor. Replacing the PS didnt help. The noise comes from the CPU fan but I cant see that as a problem as it is OK when it warms up.

    So my list of suspects are:
    - hard drive. Ive installed Win 7 on it (but didnt reformat first). I dont think this is it.
    - dodgy memory chip: this is what I suspect is the culprit.

    Any thoughts. Only locks up when starts up from cold.

  2. #2
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    Re: Computer problems

    Quote Originally Posted by 4C465344444B5F592A0 link=1273442958/0#0 date=1273442958
    Any thoughts. Only locks up when starts up from cold.
    Buy a heater? ;D

    Could be anything as it sounds like it might be a bad solder joint somewhere. My bet it is the mother board.

    Could try changing operating systems as it gets cold when the windows are open. err bad joke.

  3. #3
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    Re: Computer problems

    To me it sounds like a bad memory stick. You going to have to try the old process of elimination with this kind of issue.

    Also if you want take of your cpu fan and give it a good clean and then spray a little grease and the noise should go away.

    Cheers,

    IB

  4. #4
    A_M
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    Re: Computer problems

    My bet is as per bassway... MOB on teh way out..


    Have a look at this and then ya MOB.

    http://en.wikipedia.org/wiki/Capacitor_plague


    Yes... Life can be extended in some cases if only one or two faulty caps..

    1: Cut the dead ones out... Those that are going short..

    2: Cut the dead one out and leave enough of the legs to attempt to solder connect a new cap to it. Desperate measures as the solder ( the legs of the old cap are coated and often the ends are that which have been crimped to teh guts of teh cap... Does not take to solder) and space available can make it difficult.

    3: Do not attempt to de solder... Multi layer boards and a good chance you will stuff it ASAP.

    Let us know how ya go.

  5. #5
    Senior Member flynnaus's Avatar
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    Re: Computer problems

    Thanks guys. Jokes aside (you need a new writer BW ;D ) I can see how the motherboard could be a factor especially from the cap plaque factor in AMs link. Perhaps a dodgy memory chip would be more likely to fail as it heats up.

    I dont think Ill stuff around trying to work out which caps are faulty and Im nowhere near good enough at soldering for such a delicate job even if I do leave legs. Ill invest in a new mobo.

    Yeah, Ill definitely get a new CPU fan IB. Ive measured a CPU temp facilty for my Asus Mobo and it reports about 63 degrees at start up and then drops back to a normal op temp of around 57 degrees.

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    A_M
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    Re: Computer problems

    Quote Originally Posted by 767C697E7E716563100 link=1273442958/4#4 date=1273446635
    Thanks guys. Jokes aside (you need a new writer BW *;D ) I can see how the motherboard could be a factor especially from the cap plaque factor in AMs link. Perhaps a dodgy memory chip would be more likely to fail as it heats up.

    I dont think Ill stuff around trying to work out which caps are faulty and Im nowhere near good enough at soldering for such a delicate job even if I do leave legs. Ill invest in a new mobo.

    Yeah, Ill definitely get a new CPU fan IB. Ive measured a CPU temp facilty for my Asus Mobo and it reports about 63 degrees at start up and then drops back to a normal op temp of around 57 degrees.
    Just have a quick look... If ya have any that look like the tops have pooped up etc... Then that is a contributing factor.

    63 and even 57 is a bit hot for my liking..

  7. #7
    Senior Member flynnaus's Avatar
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    Re: Computer problems

    Cheers

    Had a chat to a colleague and he told me to look for bulging caps.

    60 is the threshold on the CPU temp monitor He agreed that the CPU temp is probably too high so Ill grab a new fan and some silicon paste and try that first.

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    Re: Computer problems

    Also try just removing the adaptor cards (including the video card), cleaning the contacts and replacing.
    Probably do the same with the memory chip/s.

    Could be a quick and easy fix.

    P.S.
    Quote Originally Posted by 0B242D2F38072B242B2D2F272F243E4A0 link=1273442958/3#3 date=1273445565
    Have a look at this and then ya MOB.

    http://en.wikipedia.org/wiki/Capacitor_plague
    nice

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    Re: Computer problems

    Quote Originally Posted by 505A4F5858574345360 link=1273442958/6#6 date=1273450150
    Cheers

    Had a chat to a colleague and he told me to look for bulging caps.

    60 is the threshold on the CPU temp monitor He agreed that the CPU temp is probably too high so Ill grab a new fan and some silicon paste and try that first.
    As I said... CAPS are popping..

    This will also cause heat issues... Due to the lack of regulation on the power supply to the MOB components and CPU.

    1: Check to make sure ya FAN and cooling fins are clean... Bet they are all very dirty with fluff and skin deposits. Dirty fins will had 10C no problem at all...

    2: Si past and a new fan will do little.. * Need to lap the CPU and Heat sink and use as little heatsink compound as possible.. *(Silver past is best) *This will drop another 10C

    If any caps are popping / bulging.. Then every thing else is a waste of time.

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    Re: Computer problems

    Remove hard drive and other peripherals you know are working take the motherboard outside with the addition of a little petroleum and a small flame stand back and smile at the reversal of pain and suffering You are causing to your former PC. Then make a short and low stress trip to your local PC supplier.

    Last motherboard problem I had (tried a new power supply and a clean first) I did pretty much as above, $350 for a brand new box for the office minus a few bits and got to keep my sanity. That included re installing the bits and setting it up. Still have the old case and I am going to put my old P3/win98 in it.

  11. #11
    Senior Member flynnaus's Avatar
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    Re: Computer problems

    Quote Originally Posted by 426D6466714E626D6264666E666D77030 link=1273442958/8#8 date=1273454832
    As I said... CAPS are popping..
    Just confirming what you said AM, not ignoring. I already cleaned all the fans - CPU and graphics card while I had the box open.

    I like your thinking BF. Ill take a gamble on the CPU fan first.

  12. #12
    A_M
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    Re: Computer problems

    Quote Originally Posted by 72786D7A7A756167140 link=1273442958/10#10 date=1273458659
    Quote Originally Posted by 426D6466714E626D6264666E666D77030 link=1273442958/8#8 date=1273454832
    As I said... CAPS are popping..
    Just confirming what you said AM, not ignoring. I already cleaned all the fans - CPU and graphics card while I had the box open.

    I like your thinking BF. Ill take a gamble on the CPU fan first.
    So do any caps have popped or bulging tops.. ???????

    PS. Laping the CPU / Heat sink guide...... *http://www.techpowerup.com/articles/cooling/air/39 and here http://www.overclockersclub.com/guides/lapping/

    I use my own method... Note: Less is more when it comes to the transfer compound.


    If so; fans etc are not worth the effort.


    Quote Originally Posted by 7671757A72786D7D7A73140 link=1273442958/9#9 date=1273455466
    Remove hard drive and other peripherals you know are working take the *motherboard outside with the addition of a little petroleum and a small flame stand back *
    But do not breath in all the cancer causing chemicals...


  13. #13
    Senior Member flynnaus's Avatar
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    Re: Computer problems

    Quote Originally Posted by 4D626B697E416D626D6B69616962780C0 link=1273442958/11#11 date=1273459720
    So do any caps have popped or bulging tops.. ???????
    Im not at home at present so I dont know.

    Ill check out lapping later. After checking the CPU fan on the weekend, whomever added it the first time did a lousy job and I wont be getting him to build a computer anymore.

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    Re: Computer problems

    Quote Originally Posted by 406F6664734C606F6066646C646F75010 link=1273442958/11#11 date=1273459720
    I use my own method... Note: Less is more when it comes to the *transfer compound.
    The super nerdy techs at where I work tell me that the transfer compound is actually an insulator. Transfer is a bad term.

    The insulation properties are far less then air though. So as the link that AM provided shows the compound is to ensure a smaller to non existent air gap between the device and the heatsink therefore better heat transfer.... I think I just contradicted myself.... ;D
    Well "Transfer compound" is a bad term if you dont know what is going on.

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    Re: Computer problems

    Quote Originally Posted by 2C2F3D3D392F374E0 link=1273442958/13#13 date=1273464319
    Quote Originally Posted by 406F6664734C606F6066646C646F75010 link=1273442958/11#11 date=1273459720
    I use my own method... Note: Less is more when it comes to the *transfer compound.
    The super nerdy techs at where I work tell me that the transfer compound is actually an insulator. Transfer is a bad term.

    The insulation properties are far less then air though. So as the link that AM provided shows the compound is to ensure a smaller to non existent air gap between the device and the heatsink therefore better heat transfer.... I think I just contradicted myself.... ;D
    Well "Transfer compound" is a bad term if you dont know what is going on.
    giggled like a schoolgirl.. *bassway.. Ya right.. *Many just plunk it on.. It has better conductivity than air... Thus the Silver is good, but of course the less ya need the better.

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    Re: Computer problems

    if you want to test hardware, download yourself a copy of memcheck, free open source memory tester - will tell you if you have bad memory (jokes aside).

    Have you recently changed the orientation of the way your computer sits? I have seen instances where servers are sitting on shelves in a rack and then swapped over to a rack mount kit, the bearings in the HDD give way and the drives goes out to lunch.

    If your in Melb, I can recommend a good computer tech to take a look (me)

  17. #17
    Senior Member flynnaus's Avatar
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    Re: Computer problems

    Thanks melbuurn

    I didnt think of the memcheck - realsied Ive used it before but my memory fails me *[smiley=huh.gif]

    Ive stuck a new CPU fan on it and it didnt lock up at start up. Thats promising! Installed the Probe utility and the CPU temp is running at 40 degrees.

    Not calling victory yet but looking good

  18. #18
    A_M
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    Re: Computer problems

    Quote Originally Posted by 646E7B6C6C637771020 link=1273442958/16#16 date=1273479101
    Thanks melbuurn

    I didnt think of the memcheck - realsied Ive used it before but my memory fails me *[smiley=huh.gif]

    Ive stuck a new CPU fan on it and it didnt lock up at start up. Thats promising! Installed the Probe utility and the CPU temp is running at 40 degrees.

    Not calling victory yet but looking good
    Tis great news..

  19. #19
    Senior Member flynnaus's Avatar
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    Re: Computer problems

    OK, update on this. bassway was right. The CMOS I think: After removing RAM and cards and cleaning contatcts, the BIOS displayed some funny characters then, on reboot, no POST. Dead MB

    Replaced (in order):

    Power supply - unncecessary
    CPU fan - a worthwhile replacement
    1 GB hard drive - not necessary, but a useful purchase
    motherboard + 2 sticks of DDM3 RAM

    I now have a fully functioning system which should be good for at least two more years. Out of pocket the best part of $400

    With the new CPU fan and a bit of silver grease the CPU runs at a cool 33 degrees - room perhaps for overclocking it a notch but I probably wont bother.

    The old GeForce 8500GT graphics card still works fine - a noisy fan at startup but I might try IBs trick of removing, cleaning and giving the bearing a bit of a spray.

    Are case fans and RAM heat spreaders worthwhile?

  20. #20
    A_M
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    Re: Computer problems

    Quote Originally Posted by 23293C2B2B243036450 link=1273442958/18#18 date=1274221683
    OK, update on this. bassway was right. The CMOS I think: After removing RAM and cards and cleaning contatcts, the BIOS displayed some funny characters then, on reboot, no POST. Dead MB

    Replaced (in order):

    Power supply - unncecessary
    CPU fan - a worthwhile replacement
    1 GB hard drive *- not necessary, but a useful purchase
    motherboard + 2 sticks of DDM3 RAM

    I now have a fully functioning system which should be good for at least two more years. Out of pocket the best part of $400

    With the new CPU fan and a bit of silver grease the CPU runs at a cool 33 degrees - room perhaps for overclocking it a notch but I probably wont bother.

    The old GeForce 8500GT graphics card still works fine - a noisy fan at startup but I might try IBs trick of removing, cleaning and giving the bearing a bit of a spray.

    Are case fans and RAM heat spreaders worthwhile?
    Ya want braging right = Yes

    Functionality = Only if ya over clocking a pushing read and refresh rates or CPU ..i.e. Over clocking

    Fans add noise and unless done correctly are of only little help to temps unless over clocking... If the Ambient temp is up... Only one way - Aircon.

    Can ya take a pic of the dead MOB... Close ups of the caps...



  21. #21
    Senior Member flynnaus's Avatar
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    Re: Computer problems

    Thnaks for the info. A colleague already advised these are only necessary if overclocking.

    Checked each of the caps AM. No leaks, no bulging ones. Definitely no dodgy ones there based on sight.

    Checked, guided by the pics on post #7 of this page:
    http://forums.qrz.com/showthread.php?t=219766

    Close ups of all the caps? Sorry, not today.

  22. #22
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    Re: Computer problems

    Quote Originally Posted by 78726770707F6B6D1E0 link=1273442958/20#20 date=1274227128
    Thnaks for the info. A colleague already advised these are only necessary if overclocking.

    Checked each of the caps AM. No leaks, no bulging ones. Definitely no dodgy ones there based on sight.

    Checked, guided by the pics on post #7 of this page:
    http://forums.qrz.com/showthread.php?t=219766

    Close ups of all the caps? Sorry, not today.
    No probs.. Just me being anal... The tec in me just wants to confirm.. It is part of teh learning and understand process.. The board jockey approach is just hard to deal with... But I also understand that some time; that is the way it is.

    Glad ya up and running...



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