I'm new to the community, but didn't know what else to do, I can build computers reasonably well, but have difficulty dianosing issues.
I have had issues in the past with Intel stock heatsinks popping off on one corner, causing the computer to power off without warning, but the heatsink is fine in this build.
My specs are as follows:
Corsair Obsidian 750d case with good air flow
Intel Core i7 4790k Haswell Refresh
ASUS Maximus VII Hero motherboard
32GB Corsair Vengeance Red DDR3 1600MHz memory
EVGA GTX980 SC 4GB graphics card
(Doesn't seem to be a point to discussing storage, I don't think that storage is to blame)
Corsair RM1000 1000W power supply (this is separate for a reason, which I will explain below.
I have read that Core i7 4790k processors can overheat resulting in the system switching off, but in the "stickied" thread on this forum it states that overheating occurs very quickly, usually 1 minute into operation. My system runs for hours under load before switching off. At the weekend when I am off work, I like to watch Netflix and play Minecraft, typically I do both at once as I have a dual monitor setup, full screen Minecraft on one monitor and full screen Netflix on the other and my computer seems to be able to handle this just fine for several hours, but then will randomly turn off without warning.
I am able to restart the system immediately and it runs for several more hours without issue, again with two full screen applications running simultaneously.
There is a possibility that I have just discovered, apparently there is an issue with the RM series of Corsair power supplies relating to their Zero RPM fan mode, at about 40% load the fan in the power supply is supposed to kick in and cool the power supply down, but the RM series power supply can (depending on when manufactured) have a design flaw that prevents this from happening (so they overheat and switch off), I have tested 2 RM1000 power supplies and the same random switch off occured with both of them.
Is there any possibility that my Core i7 4790k might be overheating? I know a lot of people recommend after-market coolers, but I don't overclock and everything is set as default by my motherboard BIOS.
Can you think of anything else that might cause of switch off after several hours of operation under load?
Really appreciate any help or suggestions. Thank you.