vga light on motherboard lights monthly

vga light on motherboard on my pc lights monthly. Once I fixed it, plug out and plug in again and again etc., PC works. But almost exact one 30 days later, it lights and can't boot again. It gets difficult to fix. So I guess cable or GPU is wrong. it happens since I built this PC.

OS:Windows 11 Home 64-bit
CPU:AMD Ryzen 7
RAM:32GB
Motherboard:ASRock X870 LiveMixer WiFi
Graphics:NVIDIA GeForce RTX 5070 Ti (MSI)