quancita :
photonboy :
Wow, you did it again. Well.. good luck with your problem.
I need a miracle, not luck.
Putting aside our negative comments, can you clarify you did the following:
1. Installed Windows 8 64-bit
2. Installed latest motherboard BIOS
3. CPU and RAM to default settings (for Intel, use XMP).
4. Run MEMTEST and Prime95 (#3 and #4 are to ensure no coding issues with unstable memory)
5. Main Chipset driver installed from motherboard support site, for Windows 8 64-bit
6. Realtek HD audio software installed FROM MOTHERBOARD SUPPORT SITE, for Windows 8 64-bit
7. Realtek HD codec from realtek.tw also tried
*If all the above still fails, I suggest:
1. Reinstall Windows (#1 to #5)
2. Test the audio WITHOUT installing the new codec (not sure if default audio codecs would work.. maybe).
3. Try the software package from the Realtek site first.
I've seen reinstallations of Windows fix the problem of a corrupted driver install that couldn't be properly removed.
I doubt it's damaged hardware, likely a corrupted driver as I stated, but if you finally get fed up and reinstalling Windows doesn't help then I suggest a dedicated audio card.
a) disable onboard audio in BIOS
b) shut off PC and physically install card, connect audio cable
c) Install audio software package for card
Even the $30 Asus Xonar DGX would likely be better than the latest Realtek chip:
http://techreport.com/review/23358/asus-budget-xonar-dgx-and-dsx-sound-cards-reviewed
*QUOTE from above link:
"Although it fared better than any other integrated audio implementation we've tested, the Realtek codec was clearly inferior to the DGX and DSX overall... "
(Of course, you still need half decent speakers/headphones or the quality difference might be hard to spot. I love my M-Audio AV40 stereo speakers and noticed a HUGE difference between my Auzentech X-Fi Forte. The realtek solution was actually painful to listen to after two years of my dedicated sound card (was troubleshooting).
Newegg:
http://www.newegg.com/Product/Product.aspx?Item=N82E16829132052