Random reboot when idle on an AM4 board
Random reboot when idle on an AM4 board
I rarely push my system beyond its limits. I only activated XMP, and during an upgrade I retained all previous parts except the motherboard and CPU. At first it worked, but soon random restarts started. My first step was checking Event Viewer in Windows to see what was happening. It reported that the machine wasn’t shutting down correctly—it only handled shutdowns at idle. Since I use it heavily, it stayed on 24/7. Initially it would restart a couple of times and then resume normally for the rest of the day, repeating the same pattern the next day.
I tried many solutions: updated BIOS, refreshed antivirus, updated drivers, unplugged everything, reset BIOS settings, defaulted most options. Nothing fixed it. One morning it wouldn’t exit screen-saving mode, and the following morning it also failed to display a video signal. I disabled screen saving and turned off the monitor before bed. The next day, when I tried to power it up, no video appeared. I checked everything—even removing the case—but got no signal, only a single graphics card and RAM issues. So I contacted ASUS for an RMA of the motherboard, which came back with the same problem.
The new board still restarted randomly, and the issue was worsening, happening roughly ten times daily now. I own a Noctua NH-D15S and an EVGA 750W PSU with a UPS battery; power and temperatures were stable. I then sent in the CPU (5800X3D) and a Ryzen 5 4500 for RMA. At first, everything worked, but after a week it kept asking to restart randomly. ASUS TUF Gaming X570-plus, Wi-Fi BIOS 4802, EVGA RX 6600 with 12G P5 3655 KR. G.SKILL Ripjaws V Series (4x4GB), Model F4-3200C16D-8GVKB, msinfo32.nfo, DxDiag.txt.
another 12 hours without restarting, even with XMP enabled, suggests disabling C-state might have helped. This appears to be a common issue where certain AM4 motherboards don’t provide enough idle power to the CPU. I’ve seen others resolve it by turning off CBP and PBO in the BIOS. Raising the CPU voltage is mentioned but not recommended. For me, disabling C-state in the BIOS seems like a good solution. Hope this assists someone facing the same problem now. If you don’t reply again, it means my issue was fixed.
the problem reappeared after a couple of days. i raised the cpu voltage by 0.1 volts and didn’t restart it afterward. this adjustment was related to the setting that increases voltage by 0.1 VDDCR CPU voltage, which might be useful—consider trying before changing the cpu voltage further: turn off screen saving, select {max performance} in power settings for all devices, and set min and max to 100% for the cpu. also disable c-state in bios.