Hi, bro, have you resolved the issue?
I have almost the same problem for the last 3 days
5800x with RTX 4080 TUF OC
X570 Aorus Ultra
32GB 3600mhz DDR4 Corsair Vengeance RGB
850 PRO 2TB
RM1000x Corsair
I have been dealing with no-signal to the monitor randomly, even if the GPU is with heavy...