UR interfaces audio drop outs (follow-up thread)

I have a General problem of the appearance of sharp noise from the speakers, maybe my UR824 is faulty? me it is very annoying that I constantly write about it, and they get no specific answers. Motherboard ASUS Z-97K, Windows 7 Professional 64 bit, i-7 4790, 16 gb of RAM SOMEONE PLEASE ADVISE THAT CAN HELP ME? Sorry for my English, is not my native language