Some of my laptop keyboard keys are not working!?

whang2011

This happened a little while after I played some pokemon with a gameboy emulator (Visual Boy Advance; Pokemon ruby). The keys that are not working are t, y, g, h, - and tab. At first my computer scrolled down uncontrollably at the same time this problem occurred so I scanned my computer and deleted the "unsecured" thing, I also deleted my GBA and DS emulators and their roms. Right now I am using the on-Dell XPS M1330 Keyboard and I this is really hard and slow, so yeah please help me.
I use a Lenovo with windows 7