You are missing a data line from the cpu if you have the Jail Bars and or/sound issues.
Remove all the ribbons from the cpu chain lightly sand each pin header with 800G or above sand paper. Just lightly to remove any corrosion.
Then clean and reseat. If you still have the problems try some new ribbon cables or make sure they are crimped good, sometimes the plastic end cap will come up.
But 99% this is the issue.