Yes, the CPU is cooked.
Yes, the CPU is cooked.
Hello, I owned an i7 6700k around 2015 when it was released. I upgraded it then and passed it down to my dad a few years back. At first, I faced some problems with the MB pins, but after steady hands and tweezers everything worked fine. Nowadays, the CPU fan is water-cooled with Corsiars H45. Initially I thought the paste was outdated, so I reapplied it. However, the temp spiked instantly to 100°C right before shutdown. Today fans run at 40% speed, but recently they hit full power (thanks to throttling). After entering BIOS and disabling overclocking, an auto-boot test failed. The PC doesn’t boot by itself, and the clock speed dropped below 2.1GHz even at 0.8GHz. I checked the paste job, cooler paste spread looked good (last Kryonaut used 2 years ago), and fan speeds stayed reasonable—no extreme peaks. There’s still one hot tube and one cold spot, which matches expectations. It seems the original board might be failing, but the connectors are fine and no error codes appeared. My take is that the MB is likely dead, the fans were working, and there was no warning about issues. I’m open to suggestions—any thoughts would be great. Thanks, T!
It's probable the pump in the AIO liquid cooler has failed again, similar to previous issues with other AIO water cooling systems. Swapping it out should restore normal operation and prevent the system from shutting down unexpectedly because temperatures exceed safe levels.
It seems your aio pump might be faulty. Have you found any nearby air coolers to test?
It's unusual for high-end AIOs to experience this behavior, but it can occur. When you mention the CPU slows down and shuts off at 100°C, it likely points to thermal throttling or protection mechanisms rather than a failing processor. I'm pretty sure it's an issue with the airflow or cooling system.