I have an Acer Extensa 5420 that is refusing to power up. When connected to the AC adapter or on battery, the power button lights up, and the HDD light flashes 3 times, goes out for about 3 seconds, flashes 3 times again, then everything shuts off. The screen remains black the entire time. The charging indicator on the front lights up, and the DVD drive indicator lights up and I can hear the optical drive try to spin up. Any help would be appreciated. So far, I have re-seated the RAM, CPU, and HDD. The HDD is functioning, as I attached it to another computer as an external drive and was able to see it and access it just fine.
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4/15/11 at 11:56pm