I just broke a CPU pin!!! I was so pissed (and still am) but looked up how you might go about fixing it (I was thinking about fixing it at work but I'm new there and I'd have to ask someone else to fix it for me.) They do soldering work like that at my circuit board manufacturing plant... and claim it is very difficult... also jewelers can do it... anyway I looked it up and its a VSS pin, which is just a ground pin. As long as the broken pin is not in the socket usually it will work. Anyway I bought from star micro at a very good price, but learned that they often sell cpu's with bent or broken pins. I have to assume this one was bent since it dropped into place and when lowering the lever (socket AM2+) heard a pop. Pulled it out and saw the broken pin. I have to assume that the testing was done without fully inserting the processor and locking it down (they test them like that at my plant, never applying a heatsink just seeing if connecting everything registers properly on a testing machine) and that the pin was either not touching anything or touching one of the diagonal ground pins. Mine was pin N-16, 940 AM2. VDD(power) pins are sometimes not needed either... Also sometimes you can put the pin or a wire in the socket it was supposed to go in, but uh, if your motherboard costs more than the processor just buy a new one.
Anyway I have a link for you guys with broken pins for athlon processors
for 939 pin processors
for 754 pin, and the page it came on for more info
Go to section 4 with connection diagrams. As you can see most of the center is ground and power, and grounds are usually very redundant, power much less so but still redundant.
AND FOR ALL YOU BROKEN PIN GUYS on ANY HARDWARE, CONTACT A JEWELER or a PCB MANUFACTURER IN YOUR AREA. Someone there is good at soldering/cutting/connecting under a microscope! I've seen them fix soldering errors new RAM chips by hand under a microscope!
Wish me luck as I don't have my PSU yet for the new PC... anyway it was just a 40 dollar athlon 64x2 2350BE 45 watt processor but if you bust something where 30-40 dollars is worth it (like a HDD with DATA you need,) a jeweler or computer pin repairman can help ya out. I'd ask the jeweler what it would cost, then if too much tell him what you paid for the item, haggle, etc.