How to resolve stuck "enter" key in laptop keyboard?

Hello Tech gurus,

My Acer laptop is giving me hard times. All of a sudden, it's “enter" key started misbehaving. It looks as if stuck and if I open a notepad, it automatically keeps on entering new line. I am not able to work properly. Can I solve it by myself at my end ? Please suggest. Tried most of the solutions provided in net like draining the battery, putting off the sticky keys etc. Even tried to disable enter by some.online softwares but I am at same stage. Please help.