Question about Compaq Presario 5000 PC Desktop

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Compaq presario 6000 turns on but won't boot up.

My computer was super dirty so I was cleaning the fan that cools the microprocessor. I couldn't get it clean so I removed the fan and the thing? behind it came off with it. I am assuming this is the microprocessor. I got it cleaned up and put everthing back together correctly making sure no pins got bend.
When I turned it back on, all the lights come on, both fans work, but nothing else happens. There is no beeping at all and none of the dvd players will open but the ligfhts are all on. Is there a procedure that you have to do if the microprocessor comes out? Please help if you can
Thanks
Marj

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  • marjhunkins Dec 28, 2008

    Thanks for the help.

    I didn't remove the white sticky stuff but didn't add any more to replace what came off.

    I checked the pins and they aren't bent. I took it off again to try to reseat it and now the dvd drives work.

    When I cleaned the fan, I just used air and q tips with nothing on it.

    I remembered to release the static charge before I touched it. I set the CPU on my desk which is relatively clean.

    I will take your advise and find someone that can help me reseat the CPU.

    If it goes all the way in and doesn't bend any pins, is it still possible it is in wrong?

    Thanks

  • sko42 Jan 25, 2009

    I don't think it has anything to do with the processor. I have the same problem, however, I never touched the processor...

  • Christopher Sherwood
    Christopher Sherwood May 11, 2010

    when you took the heat-sink off the CPU, did you see like a glue like substance on the heat-sink and the CPU?...that is thermal grease. if you cleaned that off and did not replace it with new thermal grease, the CPU will overheat and possible damage it.

    also

    when you cleaned the fan, cpu and heat-sink, tell me exactly what you cleaned them with, right down to the type of cloth you used, i need as much detail as possible.

    also

    did you 'de-static' yourself before touching any of the internal components of the pc? this can be done by simple touching something that is bare metal and connected to earth, eg a unpainted bare radiator pipe.

    and finally, when you were cleaning the components, where did you place them when you put them down outside the case?


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If the pins were not damaged when you reseated the CPU before then it was inserted correctly but might not have been fully, just be gentle when you put it in and when you are confident that the pins are lined up, push in firmly and then lock it down with the lever.

Something very important, although you have left the old thermal grease on it will still work to absorb heat from the CPU to heat-sink, but when cpu and heat-sinks have been separated, you must replace the thermal grease because there is a high chance that air is trapped inside the thermal grease which will reduce cooling efficiency by a large amount.

If you ever apply thermal grease, do not put too much on, only i VERY thin layer enough to cover the top of the CPU.

Posted on Dec 28, 2008

  • Christopher Sherwood
    Christopher Sherwood Dec 28, 2008

    ....Continued....
    if the computer still down work, please let me know and i will see what i can do to help

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Marj,
Even though you said no pins were bent, my guess is that one of the pins either bent or broke off completely.

I am assuming that since you were inside cleaning, the computer is out of warranty.

Try examining the CPU (thingy under the fan) for any bent pins or broken pins. The alignment back into the mother board is crucial. Usually there is one corner with no pin or the corner is squared off to indicate the positioning of the chip in the pin holes.

Reseat the CPU and make sure it goes all the way down flush to the motherboard.

Usually there is a lever beside the CPU that you can lift that makes it easy to install or remove the CPU. It is called a Zero Insertion Force (ZIF) lever.

Personally, I'd recommend a professional or very knowledgeable and experienced friend help you reseat the CPU. Otherwise, you will need to replace it and they are not cheap.

However, if the CPU is damaged beyond repair, you might find a good USED one online at a decent price.

Posted on Dec 28, 2008

  • honest1abe
    honest1abe Dec 29, 2008

    Marj,

    In my experience, it is impossible to put the CPU in the wrong way without bending or breaking at least one pin. The matching holes on the motherboard are designed with one hole missing in one corner so that putting the CPU in wrong is virtually impossible.

    Carefully check ALL the pins for damage, if none of the pins have been damaged try reseating one more time. As mentioned by another tech, once you have gently seated the CPU and you are sure it is safely aligned, press very firmly down on the chip (lean your weight into it) and pull the lever back into place.

    The thermal grease is important, but even without redoing the grease the system should power up properly. If the reseat does the job, get some thermal grease and follow the suggestion given for putting a thin film on and put the CPU back in.

    Again, I would recommend having an experienced person help.

    Honest1abe


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