On Nov 16, 4:18*pm, Karl Townsend
wrote:
i had a CMOS checksum error on my CNC mill. So, I installed a new
motherboard battery. Now the CPU fan just comes on and it makes no
attempt to boot. Is the computer DOA? I checked connections and
wiggled stuff.

Karl

Maybe re-seating the memory will work.
I have had to replace memory sticks , too.