I've had no problem with my system up until recently. My CPU cooler failed, and I had that replaced. I also picked up a new Samsung 960 PRO M.2 SSD.
My problem is that my computer will randomly freeze, seemingly only while playing League of Legends. When the computer freezes, the screen will stay on, and my peripherals will lose power. It's an entire system crash because everything becomes unresponsive, any music I was listening to will stop, and the only way to fix it is a force reboot. From what I can tell, even with a cheaper CPU cooler, my CPU temps are sitting at about 50-60 degrees Celcius while under load. I suspected it might be an issue with the SSD because I cloned it from another drive, so I ran a clean windows install last night and I just had another crash today. It happens about once every 4-5 hours or so. I wonder if my PSU might be failing, but it should have PLENTY of power for my system. League of Legends is installed on my Samsung SSD. As far as I can tell, it's the only game I experience crashes with (I can't remember but it may have happened with Fortnite as well).
I can leave the system on overnight running tasks such as Minecraft console clients, or other misc. scripts. From time to time it will crash while doing things like Chrome browsing, but it's much more often while playing League.
NZXT CAM Records my stats while playing League, it reports an average CPU temp of 56 degrees Celcius, and an average GPU temp or 65 degrees Celcius at 100 FPS, all settings maxed. Max CPU temp was 63 degrees, max GPU temp was 70 degrees.
Any thoughts or solutions would be greatly appreciated?
System Specs:
i7-6700k 4.0 GHZ (Base clock)
Temporary 3rd Party Cheap CPU Cooler
Corsair H100i V2 AIO Water Cooler (waiting for RMA return)
Asus Z170-A Motherboard
EVGA GTX 970 4BG SSC
HyperX Fury Ram 32GB DDR4 2400
EVGA SuperNOVA 750W G1 80+ Gold Power Supply
Samsung 960 PRO M.2 SSD 512GB
PNY 120 GB SSD
Seagate 2TB Hybrid Drive
Western Digital 1TB Hard Drive
Peripherals:
Corsair K70 LUX RGB Keyboard
Razer Mamba Mouse
Corsair VOID PRO Wireless Headset
Dell 34" 3440x1440 Ultrawide Monitor
Acer 27" 1920x1080 Monitor