any computer mechanics?

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maveric69656

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hi I have a e-machine I checked the power with a homn (tells if a source has power ) the ohmn jumped everytime i went to a source checked off mother board the memory showed ohmn reading and also off power supply checked battery so after this I plug it on and nothing no noise nothing moving only 1 light green in side unit its by a letter (f) no fans are running or trying to
 
An ohm meter doesn't show whether a power supply has power.

It shows whether it has resistance.

If you want to check the voltage, you need a volt meter. Connecting an ohm meter to a power source can destroy it.
 
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