GA-EP45-UD3P: Choppy Audio Only in Windows

[lancerocke]

I have a GA-EP45-UD3P (rev 1.1)
I'm getting choppy audio only in Windows 7 and Vista on any audio device, including my onboard Realtek, PCI Turtle Beach Riviera and Logitech USB headset. Linux and OS X are fine.
I notice it more when i'm watching video more than I do when i'm listening to music.
I've tried:
Different speakers
Disabling other drivers on other devices one by one and playing video
Uninstalling and reinstalling fresh drivers from the GIGABYTE website and motherboard CD via 'update driver' rather than self installing '.exe's for each audio device
Unplugging all non essential devices including ethernet lines
Going in the BIOS and turning off Azalia and trying other audio devices and speakers
Running MSCONFIG and booting with only essential startup applications and services
Testing my memory (reported no errors)
Using all versions of the 'rev 1.1' BIOS to date

Finally I ran a latency check: http://www.imagebam.com/image/290dd343992556/

A couple other people I know with the same motherboard have the same issue on Windows

[zeroko]

Has it occurred to you that the motherboard was designed for windows vista? and not 7....

or Maybe its the sound card, try buying a pci sound card

[lancerocke]

I'm getting choppy audio only in Windows 7 and Vista on any audio device, including my onboard Realtek, PCI Turtle Beach Riviera and Logitech USB headset. Linux and OS X are fine.

[lancerocke]

if anyone thinks they can help my hardware is as follows

Code: [Select]

DualCore Intel Core 2 Duo E6600, 2400 MHz (9 x 267)
Gigabyte GA-EP45-UD3P
(4x) 2 GB DDR2-800 DDR2 SDRAM  (5-5-5-18 @ 400 MHz)  (4-4-4-13 @ 270 MHz)
Logitech X-540 70 watts 5.1 Speakers
MAXTOR STM3500630AS ATA Device  (500 GB, 7200 RPM, SATA-II)
(2x) ST3320620AS ATA Device  (320 GB, 7200 RPM, SATA-II)
ST3640323AS ATA Device  (640 GB, 7200 RPM, SATA-II)
WDC WD10EADS-00L5B1 ATA Device  (931 GB, IDE)
TSSTcorp CDDVDW SH-S203N ATA Device
(extra network card) Infineon AN983B PCI Based Fast Ethernet Adapter
(extra sound card) C-Media CMI8738/C3DX Audio DeviceEverest Report: http%3A%2F%2Fdanielmichel.net%2FReport.htm

[lancerocke]

anyone?
please?

[lancerocke]

i turned EIST off and the choppy audio went away