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dmitrij75Flag for Russian Federation

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Bt878 driver for windows 7 x64 for my video/audio capture card AVerMedia EZCapture

I have read the similar stuff under the same question asked by A-Tim. He has just the same problem that mine. My capture card is AVerMedia EZCapture, but the drivers are working only on 32 bit systems. But I have Windows 7 Ultimate x64 and wish to use that card. There was an answer that was chosen as accepted solution by DavisMcCarn on 2010-08-30 at 20:20:58 ID: 33560044 :
Download the 64 bit BETA driver and unzip it to a folder.  In that folder, double click on the
PCTV713xi64.inf which will open it in notepad.  Three lines down from this [Pinnacle.NTamd64] is
the entry %110i.DeviceDesc%=713xi64,PCI\VEN_1131&DEV_7133&SUBSYS_002E11BD            ;
PCTV 110i Change the VEN, DEV, and SUBSYS numbers to match yours
(PCI\VEN_109E&DEV_036E&SUBSYS_00000000) and save the file.  Then, update the driver, choose
have disk, point to the 64_bit folder, and pray a little.

The link to the place for downloading that driver doesn't exist anymore and I can not find anywhere else that driver for Windows x64:

Now I have two unknown devices in Device Manager:
1. Multimedia Controller PCI\VEN_109E&DEV_0878&SUBSYS_00000000&REV_11
2. Multimedia Video Controller PCI\VEN_109E&DEV_036E&SUBSYS_00000000&REV_11

Please help to find some x64 driver,even fit to XP or Vista, if it doesn't exist for Windows 7 or give me suggestion what to do next.
Thanks in advance!
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☠ MASQ ☠

AVerMedia, AVerTV WDM Audio Capture & AVerMedia, AVerTV WDM Video Capture

The beta driver that DavisMcCarn referred to is available to download from here:

or direct from,110i,300i,310i/

Otherwise try the AverMedia installer at
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I have two devices in Device Manager and both are belong to one card capture
1. Multimedia Audio Controller PCI\VEN_109E&DEV_0878&SUBSYS_00000000&REV_11
2. Multimedia Video Controller PCI\VEN_109E&DEV_036E&SUBSYS_00000000&REV_11

So what DEV ID should I use in the entry?


The content of the Bt878.inf file of the native driver package that came with the capture card is in the attachment, just in case.
did you try slimdrivers yet?  please do
I did, but the program have not seen the presence of this unknown device at all.
If DavisMcCarn's suggestion still works then download,110i,300i,310i/ unzip and replace the file PCTV713xi64.inf with the attached (rename PCTV713xi64.txt to .inf), then point Windows at the file location and see if it installs - it may end up being described as a Pinnacle device rather than AverMedia.
The setup has not been successful! The result is in the attachment. I tried also DriverMax, which has successfully recognized unknown device as ARGUS-P with the same VEN/DEV/SUBSYS/REV. Although the recognizing of my device was successful, I had the same error as shown in the attached file.
since it is a separate card, i suggest to test it on another PC - it looks bad to me
OK one other try, rename these to .sys and .inf respectively
The problem with Multimedia Video Controller is still present. The capture details are in the attachment. I have read a Help section of Windows and found there: "A driver that lacks a valid digital signature, or was altered after it was signed, can't be installed on 64-bit editions of Windows. You will only see this message if you try to install such a driver on a 64-bit edition of Windows" How to avoid this or how to turn off the checking for driver's digital signature?
The drivers are successfully installed, but I am experiencing the same problem with driver signing for Conexant’s BtPCI Video WDM Video Capture, so the device cannot start with Windows. I tried to use the commands (method 1), that was useless for me:
                                           bcdedit.exe -set loadoptions DDISABLE_INTEGRITY_CHECKS
                                           bcdedit.exe -set TESTSIGNING ON
After that I did as described in method 2, i.e. pressed enter on “Disable Driver Signature Enforcement” upon restarting. After that, I had my drivers working correctly. But to keep the Conexant’s BtPCI Video WDM Video Capture driver working, I need to press ENTER on entry “Disable Driver Signature Enforcement” every time I start my PC. It’s very hard to remember to do that every time, so I would like to know how to make that procedure only once and forget about it. If the solution for my Windows doesn’t exist, then say me please what a soft I can use to sign the driver by the acceptable digital signature of a trusted issuer (Microsoft, Oracle, etc.)?
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