Bt878 Driver Windows 7 X64 Service

This post of mine. I have finally found the driver for this device and Luckily it might also work on your cards. Here's the bt878.inf file and what it contained when i edited it. AddService =, 2; null service install [BT848.Main.

1) If you have more than 4GB of ram, that card will never work as it won't be able to map a memory windows. 2) Your only hope (roll up your sleves) is going to be to go back to that Pinnacle link, download the x64 Beta drivers, unzip them, and then edit the INF file. In it, change the line for the 110i card to match your PCI VEN_109E&DEV_036E&SUBS YS_0000000 0&REV_11 and then try to manually update the driver.

3) You will have a similar problem with the tuner and the sound controller where it may get stickier. You'll need Universal Extractor to 'unzip' the other CAB files so you can edit their INF files to match the other Hardware ID's which won't appear until after the first driver is installed. If you've upgraded your systemboard and have PCI-Express X1 slots, I might suggest this for $39.00 which would solve the 4GB problem, too. Note this recommendation from 'nobus' - it has worked for me every time:.

We're back at the rock and a hard place. Brooktree/Conextant never wrote any x64 drivers for that chip and I was surprised that Pinnacle had. If you had used Windows 7 32 bit, we could make it work (as long as you stay below 4GB of ram); but, in x64, the only shot is to edit the INF files as I mentioned earlier and, even then, we might have incompatability issues between the Pinnacle drivers on the Hauppage card.

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You may be able to force the installation in XP compatibility mode; but, even if you succeed, it is a path for major instability issues as x64 hates 32 bit drivers.

More Information in Error Message - ' Windows Requires a Digitally Signed Driver: A Recently installed program tried to install an unsigned driver. This version of Windows requires all drivers to have a valid digital signature. The driver is unavailable and the program that uses this driver might not work correctly.

Uninstall the program or device that uses this driver and check the publisher's support website to get a digitally signed driver. Driver: 64-bit High Definition Audio Function Driver Service: Conexant UAA Function Driver for High Definition Audio Service Publisher: Conexant Systems Incorporated Location: C: Windows System. CHDRT64.sys ___________________________________________ With that being said let my introduce myself, my name is Matthew and I am having some difficulties. While using Windows Update, two important updates were prompted for me to install. Conexant HD Audio 2. HDAUDIO Soft Data Fax Modem with SmartCP Both of these programs do not register as having a publisher and are unknown?

To the operating system I am using which is 64-bit Windows 7. The sound device stopped working on the operating system after I installed these two software updates. So I went into my device manager and got the above error. Therein Led me to contacting Carlo who provided me with the basic steps which are typographed below.

Following the steps. I checked out first the “Update-a-driver-for-hardware-that-isn’t-working-properly “ article via the link (). Now, my first question is, am I having a hardware issue? My Sound Device Hardware was working just fine before the software update I downloaded which was not compatible with the Driver? I did try using Windows Update to automatically download and install the recommended updates but that is what got me where I am in the first place. The second option is to install software from the device manufacturer but I do not know who/what the device manufacture is? And I bought the computer from a friend who bought it off of CraigsList and the person on Craigslist said that they had rebuilt the computer, so I am unsure about that?

Hi Matthew, I see that you have already tried most of the things. Method 1: You may uninstall the Sound Card and reinstall to check for the issue, if you have not already tried it. Click Start, click run and type “devmgmt.msc” (without quotes), and then press Enter. Expand Sound, Video and Game Controllers. Right click on the sound card and select Uninstall. Restart the computer and Windows should now detect the sound card and install the sound drivers.

Method 2: Log on to the manufacturer website and update the latest audio drivers. Also, check to see if you have other device driver updates available.