Hard Drive Recs and advice

[spm_gl]

Sounds to me like you are using a rather crappy soundcard. I always thought IRQ conflicts were a thing of the distant past, and noise from unused inputs is something old analog consoles have.

[katejohn]

In these days technology has been developed very much. Following computer hardware can be used to prepare a good computer.
SATA Sygate, WD or Maxtor Hard drive
Intel origional processors
The motherboard of Intel is reliable
Realtek Audio device