Can't boot up after adding new memory

jasontom

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Jul 30, 2011
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I have a pc which is veriton m480 and bought a new memory which is kingston DDR3 1333 (PC3-10600) 4G. Originally the system already has kinston 2G DDR3 and works well. But now after adding the new memory, the system won't boot up after pressing power on (the screen is black). What might be the problem?

Thanks