i7-7700k arrived broken, now PCIE 16x slot 2 no longer works. (SOLVED!)

[uneven lagoon]

To summarize, I bought an i7-7700k from a second hand shop that is a huge company in the UK, they have franchises everywhere (kinda like McDonald's) and are renowned for selling well-tested, good condition computer hardware, videogames, etc.

Well the CPU arrived broken. It only detected 1 channel of RAM out of the box, and only one of my two graphics cards.

I immediately took it out of my system and got a refund for it, as this should've shown up in testing and the item should not have been listed for sale.

However, when putting my old CPU back in, an i5-6600k, my second GPU is still not detected. Not even by the bios. The GPU works in the top PCIE 16x slot, but then my other GPU isn't detected.

The cards don't even spin their fans, which they usually do, when in slot 2. I do have a 3rd slot but I haven't tested if it works as my case is too small to use a GPU in slot 3, as it's only single height.

I'm starting troubleshooting now, but it appears the faulty CPU has broken my motherboard somehow. I'm unsure how this has happened, but would appreciate anything I can diagnose to get to the bottom of the situation.

My first step will be looking at the CPU slot pins, if any are bent or not. Any more suggestions would be greatly appreciated!

Tl:Dr - New CPU arrived broken and partially broke my motherboard. CPU was refunded, but I need to verify that I didn't break the board while putting the new CPU in. Any advice would be great.

[surreal plinth]

what shop just want to know also can you return it

maybe i think you have a faulty motherboard do you have a spare gpu to hand

[uneven lagoon]

CEX, and I did return the CPU for a full refund.

I have two GPUs in the system that both work in slot one, but neither in slot 2.

[surreal plinth]

faulty motherboard probabbly got damged in shippign yes it is a welll know brand

I though mayeb you thought it was no i have seen it eveywhere

[uneven lagoon]

I didn't buy the motherboard from them, I constructed the entire PC myself from second hand components about two years ago and was upgrading the CPU.

CEX are only in the UK, by the way

[surreal plinth]

nevere knew that i liv ein the uk

[surreal plinth]

Bios setting can you get into the bios

[uneven lagoon]

Yeah I can get in the BIOS

[surreal plinth]

seeif there is something to do with pci slots what is your motherboard and specs

[uneven lagoon]

Yeah there is, but they're all set to Auto, and still doesn't detect the slot

[surreal plinth]

do nto set to auto set to what it is meant to be

why do you gave two gpu;s what are they what are the specs also you said the fans are not spinning which maeks me think that they are not getting power

[uneven lagoon]

Yeah that's what I thought too, no power from the slot at all, but the GPUs themselves do work, both in other computers and in the first PCIE 16x slot.

I use two GPUs as I have 4 monitors, and my second GPU is tasked in windows with decoding and encoding YouTube and Twitch streams to take the performance hit away from my main GPU

My main GPU is a GTX 1070, and my secondary is an AMD HD 7850. I've never had problems with either until I mounted the new CPU yesterday

They're both currently in my PC, but the BIOS only shows the NVIDIA card

And in Link Speed settings, it also shows that the card is not present

[uneven lagoon]

Okay, I'm gonna close this as solved!

After a look around online I found out that my Bios was severely outdated, after updating to the newest BIOS available, I have now fixed the issue. Thanks for the help!

i7-7700k arrived broken, now PCIE 16x slot 2 no longer works. (SOLVED!)