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A static discharge happened in my Optiplex GX270 a few years ago, and I just now got around to replacing things. I've replaced the motherboard because I think it was the problem part, and the hard drive because it failed later.
Between that incident and now, turning on the computer did nothing, not even the POST. The orange LED on the motherboard was on, and even the fan didn't turn. I confirmed recently that the processor works by putting it in another computer. At that point the diagnostic lights were GYGG, and no beep code.
On the new motherboard, everything seems to be working, but I have no video (though the monitor acts like it is receiving a signal). Orange LED is on, power button is solid green, diagnostic lights are GGGY, and there are two short beeps.
What's the issue?