[SOLVED] ASRock B360M-HDV 5 beeps on start

[adnan_16a2]

I have:
Motherboard: ASRock B360M-HDV
Processor: i5-9400F
BIOS: American Megatrends P4.00
Peripherals: One Graphics card, one PCIe WiFi card.

I'm getting 5 short beeps on starting the PC, before any display appears on screen; and then system starts normally with one beep after that. I've reseated the CPU, graphics, WiFi, changed RAM slot, cleared CMOS (removing the cell then pressing power for 5 seconds). What else can be done?

 

[NightHawkRMX]

What GPU are you using?

Could be the bios version is incompatable.

 

[adnan_16a2]

What GPU are you using?

Could be the bios version is incompatable.

ASUS 1060 6GB, this.

 

[adnan_16a2]

SOLVED:
It is the video output which is the cause of this behavior. Whenever I start the system without turning on monitor first, I'm hearing the beeps, but when the monitor is turned on before the system, there are no beeps. IDK whether this is a "feature" of motherboard or the graphics card. They should catalog these things somewhere.