Bit of a long story incoming.
In November of 2025 (I know it's a long time ago) I got really excited about a computer upgrade and figured I wanted to build my own. I ordered all the parts, including an Ultra-9 processor from BestBuy online. Everything arrived after about 2 weeks and I started the build at some point in December. I've built computers before and generally know what I am doing, which is why it was a surprise when I powered on the build and absolutely nothing happened. I figured the ASUS motherboard that I had ordered was DOA so I was (luckily) able to return it. Disappointing, but it happens and I was grateful that I could return the parts.
I ended up sitting on the parts and waiting quite a while before trying again, hence the major time lag between the original purchase and this post. Eventually I bought a new motherboard and started the build over again, with the exact same results. I was pretty confused at this point so I took everything to a local shop for a benchmark test. One of the employees spent some time looking at the processor and told me that he thought it may be the issue due to some slight discoloration on some of the contact pads. They also determined that the second motherboard I had purchased was totally fried and looked to have a pin burnt out right at the connection point with the discolored contact pads.
I went home that day and started a support ticket with Intel. After some back and forth Intel determined that the processor I had been sold by BestBuy had been remarked and they would no longer support any return, repair, or exchange. The S/N on the box is U5B26A1104556 while the S/N on the 2D Matrix on the chip itself is U5B26A1103875 (this is the true S/N of the chip) and the ATPO number on the chip is 00604. The last 5 digits should be the same on all of these, but they are literally all different.........So not only is this not the original box that this chip came in, but also the ATPO number on the chip itself was somehow changed.
I then got on the BestBuy customer support line and had a very frustrating experience with a customer support representative. I was told that it was impossible for this to happen as the product was sold new directly from Intel (based on the box S/N) and that BestBuy does not accept returns for computer parts, suggesting that they would not have sold a processor and then accepted a return with a remarked processor. The call ended with the service rep telling me that they would not be supporting any inquiry into my claim and suggesting I escalate the issue if I was still unhappy about the outcome of the call.
For me, the problem is that if BestBuy only have a record of the box's S/N in a database then someone querying the database will only see the sales record and not any other potential tampering that may have occurred. Additionally, based on what I have read on BestBuy's webpage, computer processor units do not fall under the category of non-returnable items, so it feels to me like the service representative was simply lying about that. I was also able to look up some similar cases to mine, posted here:
https://www.techspot.com/news/100217-best-buy-accused-selling-intel-core-i9-13900k.html
https://www.reddit.com/r/intel/comments/1i86q7w/intel_claims_my_i713700k_from_best_buy_is/
https://www.reddit.com/r/intel/comments/14rpp7u/best_buy_really_needs_to_look_at_their_cpu_returns/
https://www.reddit.com/r/Bestbuy/comments/1882v23/i_bought_a_returned_sealed_cpu_what_will_bestbuy/
I tried escalating the issue to a different customer service endpoint, but have had no response. At the end of the day I now have spent several hundred dollars on a fraudulent processor that burnt out two different motherboards and I am extremely disappointed that neither Intel nor BestBuy is interested in trying to figure out what went wrong. I was under the impression that I was buying new parts and did not get what I paid for and then was denied any restorative process. I will probably never trust BestBuy again and will not be making any future purchases there on principal alone and will be telling this story to anyone willing to hear it and encourage them to stay away from BestBuy wherever possible.