CPU usage spikes upon waking the PC from sleep.
CPU usage spikes upon waking the PC from sleep.
Hey there, tech enthusiasts! I’ve got a puzzling problem that hasn’t popped up before. When I power my PC back on after sleep, the CPU temperatures jumped to about 80°C to 90°C. That’s way higher than usual, especially since last weekend it never got this bad. I’m guessing there might be a couple of reasons behind this spike. First, the thermal paste might have worn off and needs reapplication. Second, maybe the cooler pump is faulty or there are air bubbles in it. I recently fixed the thermal paste issue by reapplying it to my cooler, and it worked for a couple of days. But now that I’ve been up, the temps returned to that range.
I also noticed the coolant in my AIO was already at around 50°C when I turned my PC on after sleep. That’s odd because my room is cool at about 22°C. I’m not sure why this happened, but it makes me think the CPU might still be active or getting a lot of power while asleep. I’d like to test this further to confirm.
Could it be that my PSU or another component is causing the CPU to run so hot even when the system is in sleep mode? I’ve got all my specs handy if you want to dive deeper. Let’s figure this out together!
Your fans stop working when the system is in sleep mode, which slows down cooling while you're resting but still brings it up to room temperature quickly—like a cup of coffee left out. It seems the AIO might be the issue, as they typically last only about two years before the fins under the pump get blocked and particles accumulate at the lowest point, often near the CPU. You might want to try placing your tower on its side to test if that helps. Consider switching to a D15 Noctua model for better airflow and to avoid hidden problems.