Leave the plug on in the evening?

I left my laptop cable on tonight and now it doesn't charge anymore. I don't have enough pocket money to buy one and it belongs to my sister. I broke it for the second time. Can you repair it somehow? Please.

Huh? So it has to be plugged in if it was the fault

XD

The way you write you seem to have no idea at all, so: have it repaired or buy a new power supply.