Won't turn on, no lights
It went dead after I took out the CMOS battery.
Before, the light would be on, when I tried to turn it on, but the screen remained black. In fact, it went black and freezed while I was AFK, and then the device would not reboot. I tried then replugging the charger and the main battery with the same result - lights on (at least the “lightbulb“ indicator), no boot. Then I did the same plus reinserting the CMOS battery (drained static with the power button), and now no lights even flicker.
I let it rest for a day without either battery, but it's still dead. I tried charger only (two different ones, in fact), and battery only, same result. I also checked the RAM modules, detached the HDD, and tried pretty much everything.
I suspect the main battery is the issue, but shouldn't the thing be able to run on AC only, with the battery detached? And what could go wrong with the CMOS battery reset?