For assistance: your PC screens are going dark and the CPU cooler or system is experiencing issues.
For assistance: your PC screens are going dark and the CPU cooler or system is experiencing issues.
I assembled this system roughly a month and a half back. All components were sourced from Amazon except the CPU cooler, which was purchased from B&H. All software and updates remain current. The kit includes: - Motherboard - MSI Z790 Gaming Plus Wifi - CPU: Intel Core i7-13700KF - Graphics: ASUS Dual DeForce RTX 4070 Super EVO OC Edition 12GB GDDR6X - Cooler: Lian Li Galahad II LCD 360 AIO Liquid Cooler - RAM: Corsair Vengeance RGB DDR5 32 GB (2x16GB) - Power Supply: Corsair RM1000x Fully Modular ATX - 80 Plus Gold - SSD: Samsung 990 Pro 2TB - Hard Drive: Segate BarraCuda 2TB Internal HDD - Fans: Lian Li UNI Fans SL- Infinity - Operating system: Windows 11 (last updated ~1 week ago) The PC has been functioning well for about a week without issues. Recently, the monitors started disconnecting—powering on doesn’t cause shutdowns, but they lose signal to the GPU. When this occurs, the cooler’s LCD appears gray, temperature drops to 0°C, and all fans and LEDs operate normally. Occasionally, during games or restarts, the monitor reconnects by itself, but applications close automatically. This suggests a potential power supply or motherboard concern. The board shows debug LEDs but doesn’t illuminate when this happens. Audio and microphone remain functional. I’ve noticed performance dips after hours of gaming, sometimes right at startup. Once it restarts, the issue disappears, though the screen only appears on the home screen during Discord sessions. This pattern hints at a possible power delivery or CPU-related fault.
I believe the issue lies with the GPU. Your monitors are losing signal while everything else functions normally, except for the CPU cooler. A motherboard problem wouldn’t prevent you from booting into Windows or posting online. This suggests the GPU is likely failing and will cause issues with the LCD on your AIO when it stops working.
Last night I changed the PCIe port where the graphics card is connected to check for any recurrence. So far it hasn't occurred (probably just a day, we'll confirm). If it happens again in the new slot, I'll update the BIOS to investigate; otherwise, I'm convinced you're right and will need to swap out my GPU.