Keyboard Problem.

Hey guys, Sup?

It's me Maddy, and my laptop sometimes gets so annoying that I usually ram the keys. Whats my problem you ask? Some keys like 'N' 'A' 'Shift'[LEFT] '~' '\' etc. I play a game called VCMP, I thought it happened only in that game, but actually it doesn't work anywhere! I have to ram it up to make it response again. I tried taking out my battery and the charger and pressing and holding the start button for Sixty seconds, still didn't work. So any help guys? Which will help ME make my keyboard once again.

Info of my laptop: Toshiba, AMD+ Vision, Energy star. Was originally Windows 8, then I converted it into Windows 7

Regards, Annoyed and Angry at my laptop,
Maddy