Question I hear a long beep. I used to hear short beep at boot

[heitorbonfim]

Now I hear a long beep instead common short beep.
PC have no issues.

MSI moderboard H110
16 GB Memory
GTX 1060 6GB
ADATA 1 T

 

[Ralston18]

Any hardware changes?

Any software changes?

What BIOS is installed?