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• Morgue[FLB]

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  :: Mortal Wombat ::
  

  16 years ago

  Tue Nov 17 2009, 11:14am

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  Morgue[FLB]

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  :: Mortal Wombat ::
  

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  16 years ago

  ---

  Yet another Windows 7 problem to report!
  
  In Windows XP, I could use a combination of my nVidia 7800 GTX graphics card's VIVO (Video In Video Out) capabilities, nVidia's WDM driver v4.1.3, and a program called DScaler, to watch TV on my PC.
  
  I fed my TV aerial input into my VCR, and from my VCR's Video and Audio Out into my graphics card's Video In and my sound card's Line In. This works like a charm in Windows XP (despite the occasional crash/hang - DScaler isn't the most stable software).
  
  But of course, Windows 7 has to be finicky and complains that the nVidia WDM driver is not WHQL signed/certified when installing it. I think that Windows 7 has disabled the WDM driver.
  
  Is it possible to find a Windows 7 compatible WDM driver? Has nVidia released anything like that? Is there a way to get Windows 7 to be slightly more promiscuous and accept the current WDM driver (v4.1.3)? As you will see in my soundcard problem post, I have managed to bypass Windows Vista (aka Windows 7)'s driver restrictions before. But I'd prefer to do it the 'official' way, rather than hacking the operating system.
  
  I spotted someone on the nVidia Forums who seems to have the *exact* same problem: http://forums.nvidia.com/index.php?showtopic=108027. Unfortunately, no-one has yet replied to his 12-day old post.
  
  !huh
  
   
• Enigma_2k4

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  16 years ago

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  Enigma_2k4

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  16 years ago

  ---

  I use a cheapie TV card and it's working fine using their native software. Windows Media centre has an issue tho when watching TV giving me a "low bot rate" error.
  
  Again, I can't really help you here...
   
• Morgue[FLB]

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  :: Mortal Wombat ::
  

  16 years ago

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  Morgue[FLB]

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  :: Mortal Wombat ::
  

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  16 years ago

  ---

  
  I use a cheapie TV card and it's working fine using their native software.
  

  Enigma_2k4

  I'm sure discrete TV cards are supported. I don't want to have to buy a separate TV card. ;)
  
  nVidia is one of the biggest manufacturer's of PC hardware in the world. Why do they not have Windows 7 compatible WDM drivers?
   
• Morgue[FLB]

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  :: Mortal Wombat ::
  

  16 years ago

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  Morgue[FLB]

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  16 years ago

  ---

  So, still no resolution to this problem.
  
  What I'm going to try soon, is to boot Win7 in a mode that no longer enforces driver integrity. Be sure I'll post my results here!
  
  ;)
  
   
• Morgue[FLB]

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  :: Mortal Wombat ::
  

  16 years ago

  Mon Oct 26 2009, 08:35am

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  Morgue[FLB]

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  16 years ago

  ---

  Alright, so I bypassed the driver integrity checks when booting Win7. I uninstalled nVidia WDM Video Capture Drivers v4.13, rebooted (bypassing driver integrity checks), installed nVidia WDM Video Capture Drivers v4.13, rebooted (bypassing driver integrity checks), and... NOTHING. No video capture devices found.
  
  Of course, after all this having to bypass driver integrity checks, I was getting tired of having to do so manually on every reboot, so here's the method of permanently disabling driver integrity checks on Windows 7 and Windows Vista:
  
  1) Start command prompt from the Accessories menu (be sure to right-click it and "run as Administrator")
  
  2) Type in bcdedit /set loadoptions DDISABLE_INTEGRITY_CHECKS and press ENTER (note the double D at the beginning of the word DISABLE. This is not a mistake).
  
  This uses the Windows Boot Configuration Data Editor to disable the driver integrity checks. I assume this can be undone if necessary (but I'm not sure =P).
  
  WARNING: The integrity checks are there for a reason. By disabling them, you run the risk of introducing instability into your Windows 7 or Windows Vista installations.
  
  However, this has not yet solved my problem. So, my next question to the knowledgeable (since Google hasn't been able to provide me with an answer to this yet): can I use different graphics drivers for different Users on the same system? I'm pretty sure that the reason the WDM Video Capture drivers are not working is because of the graphics driver that Win7 is using. If I revert to an older driver, I have a high expectation that the WDM drivers will work. Of course, I will have to sacrifice the Aero interface and a few other things, and I'm fine with doing that, as long as its for a dummy user account that I can set up.
  
  
  So, I want to find out if I can log in as a different (Administrator) user, uninstall the currently-installed graphics driver, and install a different (older) driver, without affecting my main Administrator account.
  
   
• Morgue[FLB]

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  :: Mortal Wombat ::
  

  16 years ago

  Mon Oct 26 2009, 10:07pm

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  Morgue[FLB]

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  16 years ago

  ---

  *UPDATE*
  
  Alright, I was too impatient to wait for an answer =P , so I logged in as my dummy administrator user, and uninstalled the Windows 7 graphics driver. Turns out, this uninstalls the driver for ALL users. Anyway, I then did a rescan of hardware to detect the card and forced the installation of an 'old' WinXP driver (nVidia Forceware v94.24 for WinXP, WHQL Certified).
  
  Note that in order to do this I had to cancel Win7's attempt to automatically detect and install a driver from the internet. I also had to use WinRAR to extract the driver to a folder, and then specifically set each EXE in the driver to run in Windows XP SP2 compatibility mode, and Run as Administrator. After doing this, the driver installed with no problems. I then had to reboot Windows 7.
  
  Here's a screenshot of the installed non-Win7-approved drivers. Note the lack of Aero on the screenshot:
  
  
  
  Next, I installed the nVidia Forceware WDM Driver v4.13, after which I had to reboot. Upon entering Windows 7, I was greeted by this welcome message:
  
  
  
  After this, all I had to do was open DScaler and choose the correct input source:
  
  
  
  So, problem SOLVED. I can now watch TV on my PC using the VIVO capabilities of my graphics card!
  
  However, a brief summary of the carnage in the wake of my efforts:
  
  1) Driver integrity enforcement disabled - introducing potential system instability (I've already had one blue screen since I installed the WDM drivers).
  2) Drivers being used are old WinXP drivers - therefore none of the newer features of nVidia's latest drivers are implemented.
  3) Aero interface disabled. No transparency or hover effects (this brings about a minor speed increase in the user interface, incidentally).
  4) DirectX 10 support disabled.
  5) Performance of the video being viewed via the WDM Video-In is really slow/sluggish.
  
  I am going to install Windows Live as Enigma has suggested so that I can get the Windows 7 version of Windows Movie Maker. I will then record some footage and compare it against the footage that I recorded using Windows XP. However, I think that the Windows 7 versions is going to be sluggish and badly encoded in comparison. And I miss Aero!!!
  
  This is by NO MEANS a permanent fix. I want Aero back, and I want my system stability back. So I will probably remove the WDM driver and revert back to the 'proper' Win7 graphics driver when I can no longer bear to look at Windows 7 as it currently is... ;)
   
• Morgue[FLB]

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  :: Mortal Wombat ::
  

  16 years ago

  Mon Oct 26 2009, 10:16pm

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  Morgue[FLB]

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  16 years ago

  ---

  Another quick screenshot of the video capture 'devices' being shown in the Sound, Video and Game Controllers section of Device Manager:
  
  
  
   
• Morgue[FLB]

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  :: Mortal Wombat ::
  

  16 years ago

  Tue Oct 27 2009, 08:25am

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  Morgue[FLB]

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  16 years ago

  ---

  Aaaanyway, for those of you that are following this technological soap opera, here's the final update: After struggling for two weeks to get this problem fixed, and finally managing that yesterday, I got tired of the constant BlueScreens (the only thing I could do really was watch the Video-In feed - anything else, like trying to view images or watch videos or open the newly downloaded Windows Movie Maker, caused BlueScreens).
  
  So I have removed the WDM driver and the WinXP graphics driver. I have reverted back to the normal Win7 graphics driver, and everything seems to be fine again (minus the ability to watch TV on my PC). It seems that due to bad driver support on nVidia's part, I will be forced to get a discrete (separate) TV card as suggested by Enigma.
  
  I don't expect there to be any more info to add to this thread - if/when I get a discrete TV Card, I'm sure I'll make a thread for that if I have any hassles with it ;)
  
   
• Toxic Dust [PCD]

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  16 years ago

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  Toxic Dust [PCD]

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  16 years ago

  ---

  This might not be what you are expected but have you considered that your GFX card is just to old for Win7?
  
  My GTX275 dont have issues like your having but it could be that im running on RC build 7100 ... I know the API changed in newer versions that caused win7 to be more unstable as the API functions werent recognised, especially on older hardware where the architecture of the hardware has limitations
  
  Its just a sugestion ... might be something to look at because the WDM driver works 100% on my win7
  
  Win7 7100 64 bit
   
• Morgue[FLB]

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  :: Mortal Wombat ::
  

  16 years ago

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  Morgue[FLB]

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  :: Mortal Wombat ::
  

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  16 years ago

  ---

  Thanks for the feedback Toxic.
  
  Personally, I don't think 3 years is so old that a lack of support from the manufacturer is acceptable.
  
  Indeed, graphics cards are one of those components that have a much longer lifespan than say, harddrives (which have a much higher failure rate and so we don't expect them to last much longer than 5 years). Graphics cards can last for a decade or longer (as long as the interface is still supported - AGP, etc)!
  
  So I don't consider my 3 year old card to be so old that it no longer warrants support from nVidia.
  
  Do you mind if I ask what you are using your card's VIVO (WDM) capabilities for?