Question afterburner shows CPU reaching 100c after minutes in game

[Synford]

I recently upgraded my PC from a i5 to an i7 8700k, along with a new motherboard and GPU. This has been my first time ever building/replacing parts and it's been an experience to say the least. I left the side panel off my first start up to make sure everything was running okay, all fans etc. and I noticed my CPU seemed to be running hot. I installed MSI afterburner (first time ever using it) and it showed my CPU climbing and maxing at 100c within minutes of running TheHunter: Call of the Wild. I just ordered a new CPU fan and thermal paste as I am using the stock fan (and paste) that came with the 8700k. I'm a newbie with this kind of stuff but there is no way on earth this is normal. It didnt seem to be noticeably hot after I pulled my CPU fan off to check it. although I didnt handle it very much.

also there is no overclocking done. completely stock.

any ideas as to what is going on?

 

[13thmonkey]

sounds to me like the push pins aren't fully engaged, that kind of temp is really only possible with poor thermal contact.

 

[rgd1101]

what the cpu cooler? could be installed wrong. what thermal paste did you use?

 

[Synford]

sounds to me like the push pins aren't fully engaged, that kind of temp is really only possible with poor thermal contact.

I did notice some wiggle when removing the cpu fan but didnt think anything of it. I havent even turned it back on since I put the fan back on, I'm gonna check it now and give it a shot!