Laptop crashes only with charger?

Have a very old laptop: Samsung NP-R590. Actually, the laptop works without problems but when I charge it and it is in operation, it simply crashes after a few minutes and is also very hot. Without a charger (connected), the laptop goes perfectly.

Can someone help me there?

Does it simply crash without blue screen etc?

The battery is over. You can use the calculator permanently with power supply - without battery - or you buy a new battery.

Yes without bluescreen

Battery pack?

I mean the laptop runs without a power adapter perfectly only with power supply it goes out

Then make sure kuzschluss (the charger)

Yes, believe me, get me a new one and test it out