I am just a user and my old Toshiba Satellite 2520 CDT more and more often does not start (DC-in & Power lights are on) for over 30 minutes. I am trying to disconnect and reconnect power cable. Nothing - just those 2 green lights are on. After that I can't even shut it down by pressing the power button
So I disconnect power cable and try again fore while. Then suddenly it starts. After another 30 minutes or so it freezes again. And the same story repeats.
But this time when I press and hold power button it beeps 3 times and shuts down. It runs on external power only (battery is taken off).
Would it be a motherboard or maybe power jack or cord power connector inside laptop itself, or maybe CMOS battery is low?
It runs on external power only.
I know what you are going to say - get another laptop, but if it is just a CMOS battery, I would change it.
Please, help! Please tell me if I can test it some other way.