the laptop can not on.. when i try to on it, it only shut down again after a 'beep' sound. i try to use the battery and also the AC adapter, but still can not on. what should i do? i just change the motherboard.
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More aboutacer 4520 laptop power problems
Verify that your processor/video card heatsink assembly are properly mounted and are working. Also, are you 100% that the motherboard you installed is functional?