How To See If Batteries Are Dead. Check for these common symptoms of a dead battery. Look at or select the battery icon to view your battery status in the desktop notification area and then select the section below that matches what you see on your screen.
There are numerous reasons a check engine light might come on a dead battery being one. Unfortunately this will only work with alkaline batteries so dont go dropping your Lithium-ion rechargeables. The chip has the information about all the systems configuration such as the hard disk date and time etc.
If youre referring to a laptop or Computer if you switch on the device and it starts up then fails during loading the drivers operating system.
When the batteries are inside the panel right behind your keypad. On YouTube he says. Check Your Battery Cables. It allows your battery to reset itself and perform self-diagnosis and see the remaining energy in the battery.
