Experiencing Issues! CPU Overheating During Startup at 100°C
Experiencing Issues! CPU Overheating During Startup at 100°C
I've been working on this for the past three days and still can't figure it out. I've listed my system details below.
The overheating problem isn't consistent; it only appears after changing a few BIOS settings to prepare the CPU for overclocking. I haven’t adjusted the Core Clock Speed Multiplier or Core Voltage—everything remains at "Auto." The only changes I made were to EIST, Turbo Boost, and Intel Enhanced Turbo, setting them to "Disabled."
According to my understanding of these settings, disabling them should allow the CPU to maintain its base clock speed (4.0 GHz).
After disabling those settings and booting into Windows, I immediately checked Core Temp and observed temperatures rising. As Windows loads startup applications, the CPU spikes to 90–100°C and occasionally reaches over 80% load, whereas normally only the hottest core reaches 60–65°C at boot. Once all apps are running, I use Corsair Link to monitor the cooler temps, which stay between 45–50°C—normally up to 36°C after boot. Even after a hard reboot, the issue remains.
If I return to the BIOS and re-enable those settings, the temperatures drop slightly to 70–80°C, even after letting the system cool completely for about 15–20 minutes.
The only workaround that seems to help is resetting the BIOS back to factory defaults, shutting down the system, cutting power to the PSU with the switch on the back, and waiting roughly 20 minutes. But this just brings me back to where I started without any real answers.
I've also tried re-flashing the BIOS to the latest version (7A11v2B), but it hasn't worked.
I'm not sure if I'm doing something wrong, and I'm at a loss for a solution. If anyone has suggestions or ideas, it would be greatly appreciated.
System Specs:
CPU: Intel Core-i7 6700K
CPU Cooler: Corsair Hydro Series H115i AIO
MB: MSI Z170A Krait Gaming 3X (MS-7A11)
RAM: 16 GB (4x4GB) G Skill Ripjaws V DDR4 3200
GPU: EVGA GeForce GTX 1080 FTW Gaming Hybrid
PSU: EVGA Supernova 750 G2
OS: Windows 10 Pro x64
Consider trying the automated overclock method. Begin by choosing a lower overclock setting. Once applied, keep an eye on CPU temperatures. If they stay within acceptable limits, proceed with further adjustments.
If temperature issues reappear, treat them as another observation. Pause and revert all settings except the multiplier. Retry the process and continue monitoring.
There are just two possible situations. The first involves the CPU cooler not making proper contact with the processor. The cooler bracket might be broken or defective, and the surfaces of the cooler or processor could be warped.
The second situation is that excessive voltage is being applied to the processor. This might stem from incorrect BIOS overclock settings or a failing motherboard. Please verify the BIOS overclock configurations.
The scenario with I7-8700K and the 300 series boards comes to mind. The mix of multi-core support and XMP settings led to an automatic overclock. Honestly, I'm not sure if this is feasible with this particular board and processor setup. Still worth thinking about.
If you read my post correctly, you reach 60C on a cpu core when starting up? That’s unusual. In the bios, you should be around 32C unless you’re running the pc in extreme conditions.
What does the vcore display in the bios?
I’d guess that if it isn’t a warped block, the impeller broke off the motor, causing vibration but no action because it can’t move liquid.
Do you have a different CPU cooler available for installation? A functioning cooler could serve as a test to verify the status of the Corsair H115i. If it maintains the CPU temperature effectively, it might indicate an issue with the Corsair H115i.