Computer shuts down after disconnecting power

Help! My son has purchased the Envy 15 and loves it BUT we have an issue with the battery. He has both batteries connected and the laptop plugged in. He unplugs the laptop - both batteries are at 100% and within a minute, it shuts off. It doesn't shut down, it's like it suddenly doesn't have power. The machine will reboot, on the batteries, no problem - but of course, windows hasn't been shut down, so its not a "graceful" reboot. When looking at the battery power after, Battery #1 is at 100% and Battery #2 is not present. It obviously has power as we can reboot without reconnecting the power. It only appears to happen when the second battery is connected. We are on the HP recommended power plan with no adjustments.
When I plug it back in, it still says there is no second battery present.
Help? Any ideas?
Plus, does anyone know if you can lock the function keys - he does a ton of gaming and uses the function keys, so the direct action keys are not a plus for him.
thanks!
Caroline

Sounds like battery #2 has a short. When the system detects a critically low battery, it is likely to devote all power to battery charge until the batery reaches 5% or so. Try each battery seperately. If no power at any time, remove the battery, disconnect the AC adapter. Press the power switch for about ten seconds. Then connect the AC adapter, let it boot, then install the battery and check the charging status. This resets the power manager. I think one battery id bad, but you will need to test them one at a time. Good luck.

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Computer shuts down after disconnecting power

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