When connected to the laptop is charging, it starts to beep until shutdown. If you take the charger out of the laptop as soon as the squeak, it makes 5 long beeps and the computer continues to run. During cheep LEDs blink orange that my laptop model indicates a critical battery level, but as soon as the beeping stops, the indicator stays green. Tried to get the battery and be powered by charging, but in this case, the laptop still turns off.
At this screen the data, AIDA is connected without charging.
Here the data when connected to the charger.
UPD. Sometimes, but rarely turns off, even without podklyuchenii charging, what it depends on could not figure out yet.
UPD2. The time between connection charge and start squeak - ~42 sec. Time squeak - 60 sec, ~38 times beeps.
UPD3. Entry in the log after turning on the computer, respectively, to this I connected the charger and he passed out.
UPD4. Found that squeak uttered not a BIOS, and an application that controls the hotkeys and special meal plans thunderobot. Service Control Manager.