computer hung

  mickie 12:54 23 Mar 03

my computer used a 260w power but it had burned
out. replaced with a 300w power supply.i switched it on was not send a signal to my monitor. it hung
i changed the graphics card with another used graphics card.nothing changed i checked it over i found no problems i tried my hard drive on another
it worked.i don`t know whats wrong with it.can any body help me.

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