AsRock Z77Pro3 intermittent constant beeps

Hi guys!

I have an old Z77Pro3 with i7 2600k and 8gb of ram (2x2gb and 2x1gb).

The system sometimes doesn't start. When it happens, an intermittent constant beeping comes from the speaker. It stops after something like 10 or more repetitions.

Instead, after a couple of reboots, it starts normally and works for hours without issues.

Anyone can helps me in solving this?

Thanks!

RLGL wrote: What power supply do you have? That would be the first item I would look at swapping out.

I have a CoolerMaster Real Power M850, that I've also tried with another board without issue.

The strange thing about this Z77 mb is that it works for days without issues and suddenly it stops working.

Now it's a week that I have no issue.

I haven't the latest bios version.