Issue with sound / crackling speakers

[ghostlyhero]

Hello,
by this way i want to resolve my problem so I´ll be satisfied if you could help me.
I have one problem, my speakers (especially monitors) are popping or crackling it hard to say, they are doing strange sounds. I´ve got connected them through RCA cable into my Focusrite Saffire pro 14 (external) soundcard and it´s connected
to the computer with firewire cable.
I´ve got FW raid plugged in my motherboard. And there should be a problem. After all decission now i know that problem is there, in MB. I dont´t know what is causing that sounds but i think that it´s something with drivers. If i´m in Safe mode, sound is clear, but if iam booting on normal, somewhere about half of booting that sound starts.
I thought that was a GPU driver, but iam not sure. Iwas trying to disable it and uninstall, but the problem still continued. I´ve got installed the latest Catalyst drivers, latest BIOS, audio drivers, everything but it´s still there.
Could anybode help me with this please?
Thank you for your time, I appreciate it.

 

[garylkoh]

Sounds like you have a problem with some drivers interrupting the audiostream.

LatencyMon or DPC Latency Checker will confirm if you have problems, but unfortunately I don't know of an easy problem to figure out what is causing the problem. If sound is clear in Safe mode, then it is pretty clear that there is a conflict.

 

[ghostlyhero]

Sounds like you have a problem with some drivers interrupting the audiostream.

LatencyMon or DPC Latency Checker will confirm if you have problems, but unfortunately I don't know of an easy problem to figure out what is causing the problem. If sound is clear in Safe mode, then it is pretty clear that there is a conflict.

Both of the programs shows that everything is okay, it seems that there is a driver conflict. But i dont know way how to check witch one is problem trigger.

 

[Arfa]

This can be a problem if some sound cards share an interrupt with other stuff. Used to be a big issue back in the day when graphics cards hosed the bus with data, even when the bus wasn't ready. Bit cheeky, but graphics cards manufacturers eeked a little extra performance out like this. However it caused problems for anything else trying to shift data across the bus e.g. sound card.

Have also seen similar stuff with dodgy mouse drivers too, albeit old school PS/2 ones.