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What is the problem if motherboard goes on but for a short while than goes off....and I suspect that it gets hot

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  • LTFubar
    LTFubar Aug 29, 2011

    short ? as 20 seconds or 20 minutes?

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This could be a heat issue. If the pc is a desktop, try running it with the case open and randomely feeling the heat sink to make sure it is not getting incredibly hot. It will get hot, but not usually hot enough to burn you, if it does, then you have a heat issue and your fan is not turning at the speeds it should be, or your heat sink might be full of dust, etc.

Also if the heat sink stays within good temps but the pc still kicks off, It may be your power supply, In that case I recommend purchasing one from geeks.com, any of the logisys power supplies seem to be pretty good from my experience. A logisys psup is typically around $24-28 before shipping. This only applies if your pc is a standard desktop, If its a mini or a laptop these power supplies won't fit.

Kris

Posted on Aug 29, 2011

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Test all leads that attach to your hard drive including electrical extensions,IDE,SATA

the leads from your ((motherboard to your hard drive)) make sure they have a secure connection and are not faulty or just replace them they could be faulty
make sure all leads that are attached to your drives dvd\cd have secure connections and are not faulty or just replace them they could be faulty ?

even something as small as an electrical extension or a faulty fan lead can cause this problem computer needs all of the data and power to travel through every working device and to have an end for a computer to be able work properly

a motherboard and a hard drive any leads between them will fail before your motherboard or your hard drive check all electrical extensions make sure they are securely seated even the cd/dvd drives need to have current go through make sure these devices are working

could be a dirty graphics card you might have remove the graphics card and clean the socket

also check your computer ram and cmos battery to make sure they are securely seated and the battery has plenty of charge
hope this helps you

Posted on Aug 29, 2011

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