That's OK. You can say you see it's busy testing the hardware before continuing. If the red light stays on unexpectedly that means something is wrong with that component.
Doesn't the motherboard manual explain it?
Hi, I have a visual problem which I dunno how to read as, I bought a new PC with next components:
NZXT S340 kućište belo (CA-S340W-W1)
GIGABYTE GA-Z270-HD3P rev.1.0
ASUS nVidia GeForce GTX 1060 6GB 192bit DUAL-GTX1060-O6G
KINGSTON DIMM DDR4 16GB (2x8GB kit) 3333MHz HX433C16PB3K2/16 HyperX XMP Predator
CHIEFTEC CTG-650C 650W
COOLER MASTER Hyper TX3 EVO (RR-TX3E-22PK-R1)
2x Cooler VENTILATOR LC Power LC-CF-120 120mm PWM
So what happends is that on boot before Windows loads (on MB bios screen) on Motherboard red light goes through CPU, DRAM, VGA and BOOT and than it boots, everything works regulary apart from from time to time 1 fan (could be cpu fan) speeds up a bit, temperatures idle are 27 celsius and everything works fine, what is the problem and how to resolve it? Thanks in advance.