ASUS P8H77-V LE audio replaced with high-pitched noise

The Ugly

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Jul 16, 2013
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My ASUS P8H77-V LE LGA 1155 motherboard has been serving me well since the end of July, 2013, and for about $65, it seemed too good to be true. That is, until about five days ago, when I decided to run three monitors at once. I remembered I had an old video card in an old machine of mine in the garage, so I stole it and put it into my computer, trying to get my third monitor to run off of it. Naturally it didnt work, and that's when the problem started.

From the first time I booted it up with two video cards (my GTX 260 and a very old, very cheap graphics card whos name I cannot find) my sound was entirely gone. Only when I turned it all the way up could I hear anything emit from my speakers, but all that emits is an odd, constant, high-pitched note, not like two-microphones-too-close-together feedback, but like a noise you'd hear on a hearing test which just simply never stops. I did countless things from deleting and downloading drivers to just now wiping my harddrive clean and starting again just to figure out what the problem was, and literally everything should run just fine on paper, but no matter what speakers or headphones are put into either jack, the same noise comes out. Only just now have I realized that the noise is still there, but astoundingly quiet, quiet to the point where the only thing you can hear is like someone whispering through an insulated wall and the only audible things are very low notes.

TL;DR: While and after trying two graphics cards at once, my audio is drowned out with a single, high-pitched note that never stops from, booting the computer up to shutting it down, and it's undeniably a problem with my motherboard. Help?
 
Its funny when you say "my GTX 260 and a very old, very cheap graphics card" Sheesh what's old compared to a GTX260? I hope you gave the old card a real good clean, especially on the pcie connector. Maybe its done some damage. Have a look. Who knows you might find some dirt in there.
If the noise persists then I think you're gonna have to bite the bullet and get another mobo. Maybe it'll prompt you to think about upgrading elsewhere too - depending on finances.
 

The Ugly

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Jul 16, 2013
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It's mostly funny because I always joke with my friends about how I have a curse that any time I want to get a new component for my computer, something else always breaks that I have to spend the money to replace, and I was just about to get something along the lines of a GTX 750 when this problem started.

Anyway, If I do have to get a new motherboard, should I go for one by Nvidia, or should I assume this is just bad luck and get another from ASUS?
 

The Ugly

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Jul 16, 2013
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Ideally, since I picked up a decent processor to go with the motherboard and money is a bit of a problem