Guild Wars 2

Recently Guild Wars 2 is being weird on my laptop. I have had the game for 2 years and have been playing with the same settings, sometimes I don’t even have a cooling fan, and everything still runs smoothly. But now sometimes while playing GW would just automatically switches into the background along with the warning that my battery is dying (I have been plugging in the whole time and everything was fully charged.) And then as soon as GW is in the background, everything went back to normal. And as soon as I switch back to the game, same thing happens.

This can happen right at the start of game, on the character select screen, when the computer is not even warm yet, or at any time afterwards when is it fairly hot but nothing I’ve never seen.

To give some context, my laptop has had battery issues for a while, so here I am thinking it was to do with battery, so I removed the battery and plugged the laptop in and use it like a desktop. The game becomes normal then for a couple of times.

Today, still without battery, as soon as I clicked Play and hear like 1 second of the intro theme, my laptop shuts down. No restarting, it just went black. For 3 times in a row.

Anyone experiencing the same thing?