Windows 7: Conexant Sound Driver does not install

Hello,

I recently updated my windows vista to windows 7 and now I have no sound.
I have no yellow exclamation points under my device manager...I thought I could uninstall/re-install conexant sound drivers from this site Software & Driver Downloads HP Pavilion dv6748us Entertainment Notebook PC | HP® Support

but it will not allow me to install them again. It keeps saying "Driver Instillation Failed:Could not find the device for this driver"I have tried everything...tried to perform a system recovery and it works for a little bit but then the sound driver disappears/ I get a big x on my speaker icon. I tried going into bios mode and disabling it and enabling it again a long with a slew of other things.



Tech Specs
Operating System: Microsoft Windows 7 Ultimate
PC Model: HP Pavilion dv6700 Notebook PC
Graphics Card: NVIDIA GeForce 7150M / nForce 630M
Processor Name: AMD Turion(tm) 64 X2 Mobile Technology TL-60
Motherboard:Quanta 30CF
BIOS:PhoenixBIOS 4.0 Release 6.1

Hi,

I would suggest you to first run Windows Updates and then after all the windows updates are installed, restart your computer and download the Conexant High Definition Audio Driver 4.98.5.50 Windows 7 x64 from: http://drivers.softpedia.com/get/SOUND-CARD/Conexant/Conexant-High-Definition-Audio-Driver-498550-Windows-7-x64-Windows-8-x64.shtml

Keep us posted

Ok it worked for about a week but now it is back to having the x mark on the speaker icon. It also says no audio output device is installed. I have exclamation points on Base System Device,Base System Device,Comprossesor under other devices. What should I do?