820-2850-A Has green light and fan but No chime, No video

I am new here but have a 820-2850-A that has green light and fan spin but that is it. No chime, No video. Where should I start? There is no liquid damage.

also wanted to note that a usb mouse does not light up when plugged in
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Remove RAM and see if machine beeps. Case speaker needs to be connected. Any history on this board? This kind of failure usually doesn't "just" happen.
Yes it does beep when ram is removed. I do hear the HD spin up not sure if that matters. When i plug usb mouse in it lights for a fraction of a second during the plugin process and then goes off

Sorry no history on this computer. I got this in a bulk lot