My laptop screen turns off, if not charging

[nikita2004piatrenka]

I have a laptop, and i don't know why but every time i try to unplug the charger the screen turns off. Would appreciate it if someone could help me,
Thanks in advance

 

[rgd1101]

make and model of the laptop? how old it is?

 

[nikita2004piatrenka]

make and model of the laptop? how old it is?

It's 9 years old, and it's a asus x72dr-ty043v