Thank you all for your help! I just removed the motherboard and components, cleaned everything, put everything back and the 6100 has startup!

I took a picture of the motherboard for you to see if there is anything wrong. I removed the processor Heatsink for the picture but I put it back afterward.



As expected, the hard drive was dead so I found another one that I didn't use (2 GB) and installed System 7.6. It seems to work ok so far.