Device not responding, remaining functional parts operational
Device not responding, remaining functional parts operational
I have a machine for diagnostics. As mentioned in the title, it isn’t booting properly (it doesn’t even begin the tests). I’ve looked through the pinned guide about handling no POST or power issues, but that didn’t fix the problem. The system previously worked, then started random crashes on Ubuntu, making it unresponsive. It needed a reboot. I thought the power supply might be faulty—possibly causing a brownout—and changed it to another unit; however, it still crashed (though it would power up several times). After the final crash, I turned it off and left it, and now it refuses to start at all. The motherboard details are: Gigabyte A520M DS3H CPU, AMD Ryzen 7 3800X, Noctua NH-U96 cooler, 2x XPG DDR4-3200 16GB RAM, Asus Nvidia GeForce GT 710 (active cooling), a Huntkey 450W Bronze PSU, plus an M.2 NVMe and SATA SSD. It runs headless on the network, handling some monitoring tasks and even a game server occasionally. I have a buzzer connected, but it doesn’t emit sound when powering up (checked polarity; it did before). I’ve reinserted RAM, GPU, and cables—still no luck. When trying to start, there’s a faint PSU hum and fans spin slowly until power is cut (switching PSU or unplugging). The Power Switch works by blinking the LED, but nothing changes. I own a FLiR camera and inspected the board; hotspots are present—VRMs heat up to ~50°C, RAM slots reach ~40°C, chipset around 45°C, and several ICs near 40°C. No obvious faults were found. I removed the RAM sticks to force a beep code (since no LEDs show status), but it never triggers the check. I’m unsure what else to test or if I should consider returning the board. Any advice would be appreciated.
Check for any warning indicators on the board. Consider using a CMOS amplifier for better performance.
The light readings show no indicators. The device I referenced is likely the CMOS speaker, which isn't producing any sound at the moment.