this is the first time i write on this forum.
I very recently bought a Motherboard Asrock FM2A75M-DGS, it looks working good but not too rarely happens that the screen becomes black for 1 second and then turns working again.
It has never happened with the old pc, then it must be because of the new hardware.

Do you think i ought set something in the Bios or can it be a hardware problem?

Thank you very much.