how can i fix this error/screen? error 78 301 = not ok --> IBM?

I tried checking all of the keys and none of them seem to be stuck. when I hit escape out of the thinkpad's error testing, the 00301, I get a screen that comes up and it has 78 301 = not ok ---> IBM. It has a circle and a slash through the ok and it looks like a book with IBM. I am not sure what this is or if it is something else. I have already tried plugging an external keyboard in to see if I could bypass the keyboard error. Any ideas on how to fix this problem? I do not have an operating system installed yet. It is a thinkpad 760xl.