My "9-o-l-." keys stop working after startup, and spreading! ahh help?

My "9-O-L-." keys stop working after startup and my arrow keys too.
Sometimes when I start up the keys will work for a bit then one by one stop functioning and then randomly work every so often, then it seems to "spread" to the right shift key, and sometimes the "8-I-K-," keys.
Around the same time when this all began my Battery completely stopped working too, does this have anything to do with it? I've reset my PRAM and no luck.
I'm planning on replacing the keyboard, will that fix the problem? or is it something deeper?
Thanks in advance!
-Andrew

I assume you've rebooted? Can you control the computer well enough to make a new account and log into it? Doubt this will fix it but maybe. The keyboard may need replacing but it might also be that the cable has worked loose so that some of the wires have disconnected but not all. Sounds like a trip or call to Apple is in order.

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