Hello,
I just built a new PC with specs:
i5-12600K
Sapphire Nitro+ RX 6800
ASRock Z690m-itx/ax
Fanxiang S880 PCIe Gen4x4 1TB
Corsair Vengeance 2x8 3000 MHz
NZXT H1 with AIO and PSU
My PC displays, but only if I wait around 5 minutes after turning it off. If I don't wait enough time, it won't display and my keyboard and mouse won't work. Also, when I reboot, the system goes to "restarting" screen and goes black. Then the monitor says "no signal" and the keyboard and mouse don't work as well. I tried flashing bios, clearing CMOS (which worked once but didn't work again), reseating RAM, using iGPU, unplugging everything, but nothing worked. Could this be a motherboard problem?