New
#1
8400GS kills my onboard sound output
I will try and make my first post as informative and direct as possible. I am having an issue with installing a NVIDIA Geforce 8400 GS video card into an older HP Pavillion 6040n
Windows 7 Professional x64
Asus P5LP-LE motherboard w/onboard sound
Intel Core 2 Duo 6320 Processor, 1.86 Ghz
Seagate 7200 320GB Hard Drive
4 GB RAM (PNY but I don't remeber the speed of it)
Geforce 8400GS 512 MB graphics card with DVI and VGA outputs (no S-Video, NO HDMI outputs)
300W generic PSU
when I physically installed the graphics card into the PCIE slot and rebooted the computer the sound stopped working. the computer does not see any audio output devices that are installed. when I mouse over the small speaker in the bottom right corner there is a red x over the speaker, like it's muted, and it says "no audio output device is installed" When I remove the card and go back to using the integrated graphics card in the motherboard, the sound works fine. I am using the 3.5mm jack off the back of the motherboard to get to my desktop speakers.
I have tried installing the latest drivers from NVIDIA, doing a clean install of the drivers (IE removing the old versions first)
I did not let in install the NVIDIA HD audio driver that comes in the 260.99 driver
I tried reinstalling both the Realtek R255 sound card driver and the older R235 Driver.
Nothing I have tried has worked. Something interesting I have noticed is windows installs 4 generic High Definition Audio Devices. When I see them in Device Manager I delete the drivers and restart the computer, but every time I restart, there is still no sound, and windows once again installs 4 HD audio devices.
Why would a graphics card render an onboard sound card inoperable? Would a clean install of windows 7 fix my problem? Did I go to cheap in selecting the 8400 GS? Could this be in IRQ conflict?
Thanks,
~Romeo
Last edited by DarkHorseRomeo; 04 Jan 2011 at 19:39. Reason: Additional Idea/Question