I disconnected graphics card, but still same. I alternated the RAM in different DIMM slots, but still same. and tried to boot, but CPU LED was still red. only had the motherboard, CPU attached, cooler attached, cooler fan and fan pin attached, 1 stick of RAM in the DIMM_A1 slot, the graphic card attached, the 24-pin connector from the PSU (PowerSupply) to the motherboard, and the 8-pin cpu power connector from PSU to motherboard. I searched online in forums and youtube, and this was the information that I found, and tried: I did the bench test again, remove all the components, HDD, SDD, etc. Once I got all my goods and PC in Australia, I unpacked my pc and pressed the power button, the CPU_LED was solid red, and it would not start up, and it would not even POST. After my move from USA to Australia in 2020, my pc was transported in shipping freight sea container. Background: It is a ASUS sabertooth 990FX motherboard (ATX AMD). QUICK ANSWER: Removed the CPU (and cooler), then put it back in. My ASUS motherboard was showing the CPU_LED light as solid red. Sometimes a bad driver installation / version can cause that issue, so DDU-ing the drivers and clean installing may be needed, but you may as well check if there's a software cause first.Īs of 3, I had this same problem. One of those software may be trigger the GPU to not downclock. Left click that icon and it will list everything using the GPU. If the frequencies are high despite (what should be) low load, as I suspect, open Nvidia Control Panel and under the "Desktop" menu along the top bar, select Display GPU Activity Icon in the Notification Area. Run GPU-Z and look at the sensors tab to monitor GPU frequency, temp, and fan speed during this behaviour. But it heats up again a tiny bit, so on come the fans again. But the heat it is producing due to the low load is so little that the fans instantly bring it under the threshold temp, so the fans turn off. If it maintains a high clock speed, but is under low load, it will keep warming up to the point that the fans turn on. What you're seeing is probably a symptom of the GPU not downclocking itself properly. ![]() ![]() And that when you're just browsing web pages, the GPU is doing sufficiently little work that the temp will be low enough for the fans to stay off. ![]() So the fans will be on consistently, adjusting their exact speed depending on the exact temp. The idea is that if you're gaming, the GPU is always going to be under heavy load, so the fans come on and will stay on because the GPU is always above that temp. The fans turn off below a given temp, and turn on when that temp is reached. Fans turning on and off like that are 'normal' in that it's behaviour caused by how they are meant to operate.
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