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. so i know this is just going to fail again so now im debating on either trying to borrow back my reflow equipment and reflow it, try and go for an RMA since the board is technically under warrant, or call it quits and pick up an asrock fatality or similar.Fans turning on and off like that are 'normal' in that it's behaviour caused by how they are meant to operate. It really sucks also that i just recently sold off all of my reflow equipment from my xbox/ps3 repair and modding days. Ive cleaned and replaced all that and just used some artic silver instead of pad on the nb. and they also had reflown the NB obviously poorly since it now again has a cracked solder ball lol. I pulled the heatsinks and to my disgust the thermal pad top and bottom were 2 short pieces overlapped to make them fit so a nasty contact there and then they tore a piece of the vrm pad and stuck it on the NB without removing the old. Well dont know if its good news or bad news.this board i bought was a sealed rma the owner just decided to build an intel setup while the board took forever to be returned so after pulling it all completely apart i realized that it would boot fine on the bench if i put my hand on the northbridge heatsink. the power supply is brand new cx750m so im sure its holding up and everything powers up fine just no post So looks like the cpu just decided to call it quits as far as what ive read but before i pick up another is there anything i ca try? ive reseated all of the power connectors cpu and ram. i get home this morning and plug it all back in and power it up and nothing, the system powers up but no signal output and after awhile of messing with it i realize the cpu led on the MB is solid no matter what i do. I powered it off and unplugged the system so my wife could vacuum with the outlet lol then left for work. today i swapped in two new wd blue drives since the much older pair had a failing drive (raid 0) and fully reinstalled and everything was great. i had it fsb overclocked to 4.5 and turboing to 4.8 with great temps (well below the recommended max) and the vcore at 1.49ish running great and stable in prime for over 3 hours with all the power saving features turned on. Built a cheap 6300 system a few weeks ago with a sabertooth motherboard and it has all been going great with my daughter almost constantly playing sims and fallout on it lol.
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