Help! Imac mid 2007 not posting with a penryn CPU

I needed to upgrade a 2007 imac to get it up and running for an older person and swapping the T7700 to a supposidly supported T9600 the computer dosent boot e of the debug leds turn on. No chime or display. Any help on this? (PS) El capitan is not good enough as this computer needs to atleast have catalina now.

submitted by /u/Nikkerston
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