Question about Compaq Presario 5000 PC Desktop

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CPU won't power up

The CPU does not power up with the power button pushed in. I removed the power supply from the chassis and power it up . The fan in the power supply did not come on.

Could a virus cause such problem?

Cyrus

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  • calexander12 Dec 03, 2008

    I did not check the voltage I just wanted to know if the fans would work if disconnected from the chassis.

    What is the most likely problem? Is there a fuse in the power supply I I did not see? I do not have a schematic so I do not know where my 12 and 3 volts are on the harness but I can figure out the 5 volts.

    Could it be a shorted capacitor?

    Cyrus

  • calexander12 Dec 03, 2008

    Since it would be cheaper to replace a fuse if there is one rather than the whole power supply, I would have like to have all my questions answered.

    Maybe I can fix the power supply with some prints.

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The power supply does not come up if it is not connected to the motherboard, even if it is not faulty.

To test a power supply you should test the voltages out.

At the workshop we dont even bother in thesting them, if there is no power on motherboard , then we just replace them.

check if the motherboard is powered, using a Multimeter on the MB switch contacts, if there is no power , replace power supply.

Posted on Dec 03, 2008

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Power supply issue not nothing else buy a new power supply and it will turn on again there is a short in ur power supply

Posted on Dec 03, 2008

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Sir,

Replace the fan with new one it will solved the problem.

thanks
good luck

Posted on Dec 03, 2008

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Sir, after removing the power supply did you manage to insert it correctly to the motherboard again? or the powersupply itself is the problem. if not then when this problem happen? can you give us a few details about this situation of yours. By the way, virus can disfunction the motherboard but not the power supply.

thank you for using fixya
CHARCOIS

Posted on Dec 03, 2008

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Hi,
Please recheck all the connection, its a loose wire connection and not a virus issue. Please check wire connecting to UPS and to CPU and plug in properly.

Posted on Dec 03, 2008

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Try a different power supply there is no virus to blow a power supply even if a harddrive isn't connect the cpu should still come on and if your not getting any power and hadn't changed anything on the inside like the connections to the mother board from the buttons than more than likly the power supply quit is the fan dirty on power supply if so than it has dust on components inside power supply that caused overheating....

Posted on Dec 03, 2008

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This can be a problem with the power supply of your computer and it will be better if you can try a different power supply so we can really check what is the problem here....

Posted on Dec 03, 2008

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No a virus would not cause the power supply to fail.

Are saying the power supply powered up when you removed it from the chassis but the fan didnt spin?

Posted on Dec 03, 2008

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No respons at all !


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