Yesterday I forgot my laptop charger at my place of work so I couldn't charge it and eventually it ran to 0%.
This morning I plugged it in and tried to turn it on but it would shut down 2 seconds later. I left it to charge for half an hour but the same thing would happen, so I decided to charge for longer. Suddenly, the charging LED turned off and the laptop wouldn't turn on either.
If I leave the laptop not charging for a while it will attempt to turn on but fail on connection to the grid which tells me it's not the power adapter's fault.
I can't extract the battery without completely disassembling the laptop and holding down the power button for over a minute and plugging back in did not provide any thing but darkness.
Note that the laptop is less than a week old, so I doubt the battery has failed, but it may have after all. Does anybody know what else I could try?
EDIT: Just opened up the laptop to attempt a hard reset or to try and have the laptop run without a battery. Neither have worked. I'm going to let it settle to trigger the let's try boot up behaviour I explained. If it doesn't work, I'm servicing it.
Answer
Actually, completely depleting an Li-ion battery can damage it. However, the PC power management settings should prevent that, leaving a margin of ~10% or so -- unless you changed that setting.
If letting the laptop charge for a day does not fix the issue, and it's only a week old, return it. You might want to use an external HDD enclosure and another PC to salvage anything on the disk and then erase any PII.
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