I just mounted 2 pc's and I have the same problem on both (They both have the same components). I notice that the first starts are rather slow (about 30-40 seconds). For example, the first 20 seconds there is a black screen, and looking at the pc it looks like the pc is booting 2 times because the rgb fans and the ram turn off and on again. Then I see the screen with the non blinking underscore for about 5-6 seconds and then the pc starts normally into the bios. Everything is plugged in correctly and the motherboard does not beep or give errors. I then updated the bios to see if it would improve but no result. After I installed windows to see if it would improve but still not too. In itself the pc's work correctly but I don't find it normal that the pc starts in 40 second, I myself have a pc with almost the same components and mine starts in 9 seconds and there is no underscore before starting. Any ideas ?
Motherboard : MAG B650 TOMAHAWK WIFI
CPU : AMD Ryzen 5 7600x
Cooler : Be quiet! Dark Rock 4
RAM : Kingston FURY Beast RGB 2x8GB
GPU : Gigabyte Geforce RTX 3060 WINDFORCE OC
SSD : Samsung PM9A1
HDD : Seagate Barracuda 2T
PSU : Corsair RM850x
Motherboard : MAG B650 TOMAHAWK WIFI
CPU : AMD Ryzen 5 7600x
Cooler : Be quiet! Dark Rock 4
RAM : Kingston FURY Beast RGB 2x8GB
GPU : Gigabyte Geforce RTX 3060 WINDFORCE OC
SSD : Samsung PM9A1
HDD : Seagate Barracuda 2T
PSU : Corsair RM850x