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No image no message in my monitor and keyboard also not working. Not even post message

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  • n7gtb Feb 01, 2009

    A friend brought her Gateway (GM5472) computer over with a very similar problem(?). No blue light on the front when powered on, but I can hear/feel the hard disk spin up...the cooling fans also spin up. Nothing on the monitor, no beep, no flash of led's on the keyboard and if I hold the power button to turn it off, there is no change... If you unplug the tower for any period and then plug it in again, there's a small spark like something is pulling a large current...(?)

  • n7gtb Feb 02, 2009

    Since it belongs to a friend, I don't know the exact behavior when it failed. Her (ex) room mate was alone while using it at the time and isn't offering much useful info... I Didn't notice any smoke or burn marks... Everything looks normal inside the tower, but didn't open up the power supply case. I did us a DVM to measure the voltages at the connectors (didn't unplug anything), and they all look pretty close (The +- 12 volts was just below 12 ...ie - +-11.7 to +-11.9) . This was with monitor, keyboard, etc all plugged in and running... Not too many repair shops in my area, but will make some calls tomorrow... Thanks for the assistance!

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Problems like this are usually best as a hands-on troubleshoot - I would have at a guess it's your power supply. Did you notice any smells or hot points on top of your computer as this happened?
If you got a power spike, there's also a good chance the processor (CPU) or mobo power regulator is had it.
Power supplies (PSU) can be troublesome to test and I would suggest you take the PSU to a reputable repairer who would be able to plug in a tester and tell you in an instant if it's ok or not.
Let's start with that and go from there - anything else you can enlighten us with about the fault or your findings?

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Posted on Feb 02, 2009

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