IMPORTANT EDIT BELOW
So i left my pc at this repair shop for a few days cuz of a random issue with its motherboard. Today i went there and got it back without even getting it repaired, i got home, opened it up and i see he has replaced my i7 7700k CPU with a (probably broken) i7 7700 CPU. But thats not even the worst part, because i don't even have any documentation to prove there was a i7 7700k on the motherboard when i gave it to the repair shop. So here i am, just fuming at my own stupidity cuz i lost something around 450€, not to a thief but to a scammer who i know even if i confront, he'll just deny everything and i can't do jack shit. But hey at least i learned a lesson, always take note of exactly what you're leaving with a repair shop, so they cant do the same thing...
Tl;dr : i got scammed becase i was too trusting of a random computer repair shop and got a expensive computer part stolen from me...
Edit: im an absolute moron who accused people of something they didn't do. One of you guys told me to check the logs on your motherboard and after i did i realized there was never a i7 7700k on this motherboard, it's always been a i7 7700. Im just glad i didn't go to the shop andmade fool of myself there...
EndHawkeyeErasure t1_ixdyxkk wrote
Let's give the shop the benefit of the doubt. Check the CMOS log for a change in the processor - there's your proof it was changed. Next, call the repair shop. "Hey, I had my PC in the other day, and I think yall might have put a different processor in my PC by mistake, and I need my processor back." If they say they didn't change it, kindly call them out - "Actually, the log files indicate there was a change on this day at this time, while it was in your shop." If they're smart, they'll take that as a hint that you know what you're saying and relent, or go, "Oops! Found it!!" And try to save face. If they don't relent, make their lives hell in the reviews. Make it very plain that they stole the part and lied about it even though you have proof. "Buyer beware" in big bold letters are always great buzzwords.
I hope for your sake it was an honest mistake. We're all human. But in the event that these guys are shady, best of luck to you.