DisturbedFan
Su vari siti ho cercato persone con la stessa mobo e il mio stesso problema e ho trovato questo:
If you have a Asrock Z77 and are experiencing random lock-ups or freezes with a sound loop, try bumping up a couple of the CPU voltages in BIOS and perhaps this will solve (or at least help) your problem as well.
It's okay. Already fixed. Thanks everyone for the input! Tweaked the PCH Voltage and PLL voltage, etc. Haven't had a freeze yet.
basically all I did was go through, and bump up each voltage a tiny tiny bit above what ever default is. Once you do that just start up, see if it crashes. After doing this once mine was fine. Continue to do this in tiny increments until there is no crashing. Once mine was no longer crashing, I went and would bring a voltage back down to default, and if there were still no issues afterwards, I knew that it wasn't that that was causing the issues. I did this until I narrowed it down to one or two voltages and left those right above default and haven't had any issues since! I hope that helps, if you need any additional advice do not hesitate to ask.