I tried to reset the CMOS according to the instructions on the link, but unfortunately it did not help. The computer is still just beeping and won't start. Are there also pin-s on the motherboard somewhere to reset the CMOS on the J50c-4? I have not found them. I just removed the battery and waited, but this does not seem to reset the CMOS.
If you added your own, try removing it & put the stock back in to see what happens. Otherwise, try removing the RAM & re-seating it.