Wrecked kernel

[Jonathan Engwall]

My machine was crashing, I blamed the heat, turned up the fans and it got
better. But has been writing to vm.core3 kernel.core3 at boot. Leading me
to open /boot/boot/kernel
This alone may be a very bad idea. Maybe I bumped a key while it was open.
I have serious problems now. My installation disk is missing, I am working
on burning a new one, and my backup project is incomplete.
How can I insert a kernel into a system that will not open?