Upgraded CPU PC freezes randomly

[TheMoxxy]

Hey everyone, 

 

I upgraded my CPU from an i5-8600k to an i5-9600k. I then booted my PC and everything lit up then turned off again and then went back on for some reason, then I get a bios banner saying that the boot failed cause the bios settings I had weren’t compatible with what I had, so I told it to put the defaults and boot again. It was running the CPU at 4.3GHz and then put it down to 3.7GHz. Anyway after a few mins my PC just froze; everything was still on but nothing I did with my mouse or keyboard affected what I saw on-screen, I checked the CPU again, no bent pins anywhere (CPU or MB).
 

here are my specs:

CPU:i5-9600k

MB: Z390UD

GPU: EVGA 1060 6GB

RAM: trident z rgb DDR4

CPU Cooler: cooler master 120mm water cooler
 

Thank you for reading and helping me out :)

[AntiTrust]

7 minutes ago, TheMoxxy said:

I upgraded my CPU from an i5-8600k to an i5-9600k

8600k is 6c/6t 3.6ghz-4.3ghz

9600k is 6c/6t 3.7ghz-4.6ghz 

 

you literally own two 8600k's now lol. Did you switch your motherboard too? because you should probably reinstall windows if you did. 

[CWALD]

Try clearing your cmos in case resetting your bios did not return all settings to default. One or two restarts after changing hardware is normal.

[SupaKomputa]

update the bios.