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No signal

By jgtapp ·
I have a cpmputer that's not giving power to the CPU fan. It worked fine one day and the next it didn't. If the fan isn't working can that cause the CPU to not function? Everything comes on but the monitor reads no signal.

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No signal

by Oz_Media In reply to No signal

What helped you determine that the motherboard has no signal? Not the monitor I hope.

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No signal

by Oz_Media In reply to No signal

Sorry, I misread the question, I thought you said the Motherboard had no signal.
The monitor having no signal means it isn't getting a signal from the graphics card or chipset.
Do you have a card installed or does it plug into the motherboard?
Doyou have drivers for the graphics card/chipset?
Is the monitor's cable plugged into the card or chipset? Do you have TWO monitor inputs on your PC, one on th emotherboard and one as a PCI or AGP card?

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No signal

by Oz_Media In reply to No signal

As for power to the fan, get the fan working NOW!!
Your PC will fry VERY quickly without the fan.
try a different power cable to the fan, if it is the fan in the power supply that is dead, buy a new one immediately.

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No signal

by jgtapp In reply to No signal

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No signal

by TheChas In reply to No signal

If you have an AMD Athlon or Duron CPU, even 5 minutes without the CPU fan can destroy the CPU.

For Intel, and older AMD CPUs, you have more time, but it is still not a good idea to run without a CPU fan.

Now, are you sure that power is comingon?

Do the drive lights come on, and do the drives spin up?

If no, you might have a power supply problem instead of a CPU / fan problem.
The simplest test for a power supply, is to swap in a new one.

If the drives go through their self tests, then I would replace both the CPU and the fan.

Chas

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No signal

by jgtapp In reply to No signal

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No signal

by fred07 In reply to No signal

On newer MB's the auto no start will take place at failure of the CPU fan. you must have a working fan for the MB to activate for sound or video. It will still allow the power lights to come on, ie; HD indicator and such but nothing else as it is on board protection.
Older units do not have such protection and will cause overheating of CPU with resulting loss of CPU and MB. Loss of either means DEAD MACHINE.
On non protected Systems you will ususlly loss the CPU and MB due to the immense heat.

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No signal

by jgtapp In reply to No signal

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by jgtapp In reply to No signal

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