My tower is not booting up when I turn it on. My son took the side off and was going to put more memory in it for me, but in the end he didn't. He put the old memory back in and put the side casing back on. Today, when I turn it on, it has 1 short beep and 1 long beep. It just won't boot up. Can anyone tell me what I need to do to get it back up and running?
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