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Motherboard bad?

By SylarZero ยท 44 replies
Jul 11, 2010
  1. esbo

    esbo TS Rookie Posts: 102

    OK just rebooted mine as a test.
    As soon as I power on I hear the fan start and the keyboard flash and a light (led?) where the drive is all flash at the same time.
    The screen is black for a short while and then I see the basic start-up screen (hit f10 for setup, escape for boot menu etc..).

    I don't know enough about it to say what that means for you but obviously it don't look great.
  2. esbo

    esbo TS Rookie Posts: 102

    I am just wondering what no fan means, I am assuming it would run even without a CPU or memory in the mobo, but I am guessing - not very helpful I know.

    Only thing I can suggest is reconnecting connections, having a poke around inside, you can hardly make it worse, check memory and processor seated correctly, use just one stick of memory, then try another.
    Check for short circuits.

    Good luck.
    Maybe warm weather caused something to overheat?
  3. SylarZero

    SylarZero TS Rookie Topic Starter

    Not sure if this information is helpful in diagnosing my problem or not.. .but

    Oh and -- the ethernet cord isn't being detected when hooked to my modem.

    Usually when my computer boots, it'll go "Grnk Grnk Grnk" (that sounds bad, but it's not), but now it won't. It's just fans whirring.

    Also, is there any way to test CPU. Like.... can I swap the CPU from this computer? This one is an Intel Premium 4CPU 2.8GHzProcessor (I think 256 MB of Ram) While that one is a Dual Core 2.4GHz Processor with 1GB of Ram. I'm guessing the two aren't compatible...
  4. SylarZero

    SylarZero TS Rookie Topic Starter

    I tested a new PSU--

    Same thing happened as on the old one. Guess all that leaves is the motherboard. I've ordered a new one, and hope that will resolve my issue and I won't have to get a new computer altogether.
  5. esbo

    esbo TS Rookie Posts: 102

    You mean you tested with a different new PSU?

    It seems your board had solid state capacitors which is unusual.
    They are normally electrolytic.
    Not sure if it is significant, but generally I think only small capacitors are solid state.
    So they may have skimped a little on the the capacity of the board to deal with voltage spikes.
    That might have cause a problem.
    However that's just speculation on my part.

    Good luck with the motherboard, I know how annoying it is to think your computer is screwed up.
    Fortunately mine was curable, My back up computer is ancient, it would be like going back to the stone ages.
  6. esbo

    esbo TS Rookie Posts: 102

    Not sure on that one, I use AMD and I recently upgrades to a X2 processor and I just swopped in the new CPU as it was compatible.

    Basically you need to look at which socket the CPU runs in for both CPU's and if they are the same you should be OK.

    It's seems there may be one socket which supports both chips but I doubt you have it.

    Basically count the number of pins and if they are different they they will not be compatible.

    If they are the same pin number you could be in luck.
  7. esbo

    esbo TS Rookie Posts: 102

    However it would be unusual to get a new computer with the same socket type, usually a computer upgrade is because the socket will not hold a faster chip.
  8. SylarZero

    SylarZero TS Rookie Topic Starter

    Update: THe keyboard is registering now, but nothing else new is. Ethernet still isn't detected. Impatiently awaiting the Motherboard I ordered to come in, hoping it will solve all my problems.
  9. SylarZero

    SylarZero TS Rookie Topic Starter

    Update: Replaced the motherboard, and everything is working now. Or at least so it appears. The CPU fan however doesn't fit. I have it hooked up, and in front of the CPU. Will that be okay to do?
  10. esbo

    esbo TS Rookie Posts: 102

    Well glad everything is working.

    I see there is a prob;em with the fan.

    I am not sure how you have it set up.

    Sounds like you have the heatsink on yes? But the fan wlll not fit on properly but yo haveit hooked up and working in some fashion?

    Really I would say you should get a fan which fits properly, if you have it hooked up what will happen is the fan will come on when it the cpu gets hot.
    The question is will it provide enough cooling?

    The strict answer is no because it is not installed properly.

    However I guess you can do some sort of tests.
    I mean you can watch the CPU usage and see if the fan stays on longer than normal it it
    does then it would seem it is not providing enough cooling and you should stop whatever is using the CPU.

    I would imagine the fan will get very loud as the temperature rises unchecked the noise alone will probably make you want to power off!!

    You must have a good idea of how long and when the fan come on, that should be your guide but you really need a fan which fits properly, apart from anything else the noise wil be very annoying and you risk damaging your CPU. ( Don;t know it it has a built in over heat mechanism to shut down the PC or not - that would seem sensible, but you are taking a risk using it with a poorly fitting fan).

    At the end of the day it's your PC and your CPU so it's your risk.
    Personally I would be very careful with usage and get a fin which fit properly.

    I would get this temperature monitor it should be very helpful.

    Basically the fan is only blowing air but it should be blowing it down the fins.

    If the fan is on high speed at low CPU usage I would be rathre worried to say the least - good luck!!
  11. SylarZero

    SylarZero TS Rookie Topic Starter

    Okay, new problem-

    I took the plate off the old motherboard, and put it on the new one. But if I screw the fan into it, it won't post again. If I unscrew it, it works fine.

    Right now, I have the fan and heatsink sitting so that the fan is still reaching the Core. But I'm not sure if that's enough or not. I used that program you showed me, and it said that the temperature was around 60C. If I opened a video or something, it'd be 75C, but no higher than that. Not sure if that's good or bad or what.
  12. esbo

    esbo TS Rookie Posts: 102

    Some temperatues here.



    60 sounds OK but 75 a bit high.

    Not sure which is your model.

    I try looking the specific model up on intels site and get definitive info.

    75 does not sound dangerously high what would annoy me most is a loud fan.

    Mine is an AMD 3800, it seems to idle at 53C up to 65C, when it gets above 60C or so
    the ran runs high and you can see the cooling take the temp down.

    Your figures do not sound too bad but personalty I would get proper fitting fan.

    I guess if it got to hot it might reboot so if it is not rebooting it looks OK but I would not be happy without a proper fitting fan
  13. SylarZero

    SylarZero TS Rookie Topic Starter

    Mine is around 55 when idle now that I checked again.

    I think 73.3 is what I found is supposed to be the max temperature. When it was 75, it was only up there for a split second. And now when I go to youtube with it, it doesn't go up quite as high. It goes up to 66 or so.

    The noise isn't too bad usually.

    The fan fits, but the problem is that if I screw it in, the computer won't post anymore. If I unscrew it, and just place it so that the fan is blowing through the heatsink onto the CPU, it works fine.
  14. esbo

    esbo TS Rookie Posts: 102

    Well that sounds basically OK.
    For a long time I had my fan poorly fitted it was doing little more than sitting on the CPU with a bar going through it holding it in place. However it was not secured down by the locking device. I only found out when I went to replace the CPU that it was loose and wobbly, but it had worked fine like that.
    Your temps sound pretty safe, nothing to excessive, you CPU probably runs hotter than mine anyway. I went for an AMD at the time because I knew the equivalent Intel models
    produced a lot of heat.

    What is perhaps more of a concern is why it won't post with it screwed down.
    I wonder why that is?

    Are you saying simply screwing the fan onto the heat sink causes the problem?

    I would inspect it to see if you can find what is causing the problem, it sound like something which could be fixed if you knew the problem.
  15. SylarZero

    SylarZero TS Rookie Topic Starter

    No, screwing the heatsink/fan into the motherboard causes it not to post.
  16. esbo

    esbo TS Rookie Posts: 102

    I am trying to remember how mine worked. I think the heatsink was held down by a clamp
    and the fan screwed onto the heatsink.

    Sounds like either, screwing it down stress the motherboard causing a connection to break (or be made) or maybe the screw is causing a short circuit.

    It shoud make no difference really as it is just mechanical.
  17. Bhawishya

    Bhawishya TS Rookie

    I am having the same problem with my desktop. excatly same i have changed almost everything except motherboard so can somebody tell us which motherboard we should get please
  18. r3dark

    r3dark TS Rookie Posts: 45

    What wattage is your powersupply? example i have a 750w xfx powersupply. what type of cpu do you have? have you ever gotten the video to work properly?
  19. Bhawishya

    Bhawishya TS Rookie

    I think its 750 2 but i am not sure its intel core2 duo E series. Processor is fine i am pretty much thinking its a mobo. I am trying to find the same mobo but i cant find it online.
  20. Bhawishya

    Bhawishya TS Rookie

    The mobo serial number is MCP73M02H1 its of FOXCONN. Can anybody help me to find replacement motherboard
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