The computer won't start after two days of operation.
The computer won't start after two days of operation.
Hello, two days back I assembled a new computer with these details: - Case: Corsair air flow 4000 - GPU: RTX 4070 - Motherboard: MSI B650 Tomahawk - CPU: AMD Ryzen 7800X3D - RAM: Trident DDR 5 CL28 5600 (2x 16 GB) - Power supply: Cooler Master V850 - SSD: 980 Pro Samsung - CPU fan: dark rock pro - fans: 3x pure Wings 2, 120 mm quiet So the issue is that the machine won’t start anymore. After finishing setup it worked fine and kept doing so for two days. Recently during a gaming session it just shut off completely—no error messages, no freezing, nothing. When I try to power it on again, the fans and GPU turn on briefly before shutting down. The debug LEDs on the motherboard display these colors: CPU - red, RAM - yellow, VGA - green, none. I changed the power outlet, removed RAM sticks one by one, tried connecting an HDMI cable directly to the board, but nothing changed. Whenever I attempt to boot it, the same status appears. If anyone has any suggestions or solutions, I’d really appreciate it. UPDATE: I attempted BIOS flashing first, but it failed. After clearing CMOS using the two-pin method, I tried again and this time the PC managed to turn on and stay on. However, I couldn’t see anything on the screen and neither did my keyboard nor mouse. The CPU and RAM lights remain lit on the motherboard. Edited November 8, 2023 by Ordo Draconis
I think you have to start swapping out components until you hopefully find what's faulty. The PSU should be fine but it seems like a power issue to me so maybe try another one. I recently worked on a build that wouldn't power up and would momentarily spin the CPU and GPU fans. I turned out that the RAM was not quite properly seated. Of course that's not the cause of your problem but possibly it could be bad RAM. DDR5 is problematic, or so I've heard. What does your motherboard manual tell you about the status light colors?
The indicators show the CPU, RAM, and boot device might not be recognized or are malfunctioning
I attempted to flash the BIOS onto the board, but it didn’t work initially. Clearing the CMOS using the two-pin method helped, and I re-flashed BIOS this time. The PC started turning on and remained active. However, I still couldn’t get a display signal, and neither the keyboard nor the mouse responded. The CPU and RAM lights on the motherboard stayed illuminated.