If you are getting a processor that is not suppoed to work but does that likely means that there is an identifier that matches the microcode, but may trigger the motherboard's desire for more cooling. Seeing the HP engineers genius from the back side I'd not be surprised if they built in a default in this situation to have the motherboard want a "performance" heatsink/fan.
There are two options for this.... get one of those and see if it solves the problem, or spoof the motherboard with the wiring tricks that can make a motherboard believe that it has a Performance heatsink/fan attached when it only has a regular one. Search on the forum about that.... I have it figured out in here from the past. You also can search on eBay to find the difference and rewire to match.
Usually it took a 120W or higher processor to trigger this issue, but maybe less if you are into the processors-that-should-not-work-but-do zone. Again, please share back.