>>1552979If the battery is removable, try using your laptop plugged with no battery.
Laptops can use the battery to get extra power when needed, but if it's too worn out, it might not be able to deliver the juice, thus shutting down the laptop.
With the battery removed, the laptop isn't able to do that, so it has to content itself with wall power only.
That solved the random shutdowns I had with mine.