Question Strange loud noise after installing new PSU
Question Strange loud noise after installing new PSU
I faced a confusing problem with my PC following the installation of a new power supply unit. At first, everything worked well after stress tests. But after roughly an hour of use, the fans—possibly the PSU fan—started spinning at full speed, producing a loud noise that suggested an imminent failure. Worried, I powered off the system immediately.
After turning it back on, I saw a white light on the motherboard and no display output. Switching the display cable from the GPU to the motherboard resolved the issue, allowing the PC to boot normally. However, when I reverted the cable back to the GPU, the fan accelerated again excessively, prompting another shutdown. Eventually, the PC began running through the GPU, and the problem recurred.
I’m unsure what caused this. It might be linked to the PSU, GPU, or motherboard, and I’m concerned about possible damage. I’d appreciate any advice on the cause or solutions.
When sharing a troubleshooting thread, it's standard to provide complete system details. List the specifications as follows:
CPU:
CPU cooler:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:
Monitor:
Include the PSU age along with its make and model.
BIOS version for your motherboard at this time.
CPU i5-13600k
Cooler: thermalight pearless assassin SE
Motherboard: asus Prime z2790-A Wifi
RAM: DDR5 2x16gb @ 6000 mhz
GPU: Gigabyte RTX 4070 ti
Power Supply: Cooler Master mwe 850W Gold
Storage: SATA SSD 2x, NVMe M.2 1x
Chassis: Phanteks p400
Operating System: Windows 10
Display: 3 monitors, main display 2560x1440
PSU: New unit, purchased and installed today.