Question about Acer Extensa 4220-2148 Notebook

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Light comes on, flickers once after 15 seconds then after 10 more seconds shuts off.

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Your laptop definitely needs repair. The power supply transformer is supposed to keep a constant voltage. If that voltage is not maintained, it will shut off. It may be the CPU overheating. If the heat sink also came loose then that would explain it as well.

If you feel like taking your laptop apart, see if the heat sink overtop of the CPU is dislodged. Also, check to see that there is thermal compound between the two. If there is and it's securely connected afterwards and you still have this problem, you'll need to take it in for repair.

Posted on Jul 27, 2009

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Could be a loose or shorted wire connection on the motherboard to the power supply.

Or your power supply fan may be non-op and causing system overheating and the system to shut down.

Posted on Jul 27, 2009

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