1 drive dead is not enough to form a proper opinion.
Could be the drive just dying on its own - statistically, up to 3-5% of new drives fail in the first months and that number can go up to 10% if used 24/7 in a server somewhere.
random freeze and audio crazy means a driver has crashed or something uses the cpu at 100% not giving enough processing power to the audio driver to give the sound card more stuff to play (or the operating system can't communicate with the sound card due to some hardware being stuck)
It COULD be caused by a bad power supply, fluctuations in the voltage sent to components.
I suggest checking if there's BIOS updates for that motherboard.