Windows 7: No video on dvd playback WINDOWS 7

That led me to the fix. I have an Nvidia GeForce 9600 card. The driver from Windows Update was 4/2/09. The Nvidia website had a 4/28/09 version. Once I installed this everything worked. I did NOT need to install a codec. One other interesting note was that Windows Assessment would get stuck on "Tuning Video Encoding" (or whatever it says). After I installed the update, the assessment finally completed.

Hi there
This might be due to the stupid licensing system of commercial DVD's. Microsoft might be prevented from including the DVDCSS decryption algorithm usually incorporated into commercial DVD's.


Try installing VLC and play a DVD (note not a BLU RAY one) and see what happens.
If VLC works then you'll probably find WMC will as well since VLC has the DVDCSS library integrated into it.

I haven't had any problem with this at all. Also WinDVD works (the one I got with my device).

If you need to install this in compatability mode choose VISTA SP2 as the option. RC build 7100 allows this new option and it does seem to fix weird compatability problems.

BTW even if you've got NTSC / PAL problems (regions etc) the video should still show up but garbled if you are using the wrong system. NTSC on a PAL screen will usually work but in Black and White. PAL on NTSC will show some lines like when the old "Horizontal sync" on CRT TV's (anybody remember those) was out of adjustment.

Most modern computer monitors will play either PAL or NTSC without a problem however.

cheers
jimbo

Hi guys,

I'm getting a somewhat similar problem, except that commercial DVDs simply won't play at all in Media Center, WMP, or Media Player Classic. I put the DVD in, and try to load it up but the players just don't respond. They don't freeze or crash but there's no menu, no video, no sound.
I thought it might be a problem with the dvd drive itself, but dvds manage to play reasonably fine with VLC, and its not like the OS isn't recognising the disc in the drive.

I'm pretty much at the end of my wits with it. I've tried downloading mpeg2 decoders, codec packs, or searching for anyone with a similar problem and this thread is probably closest to mind I can find.

Anyone have any ideas?
btw: gtx 295, pioneer dvd r/w drive, using the windows7 64bit beta (build 7000) but downloading the RC now in hopes that it's fixed.
All drivers are up to date too.

Many thanks!

Well whaddaya know, switching to the RC fixed it up totally!

Hi there, I did got all those probs either....but i did a search in registry and found that...

Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows Media Foundation\HardwareMFT]
"EnableDecoders"=dword:00000000
"EnableEncoders"=dword:00000001
"EnableVideoProcessors"=dword:00000001

I did change the value "EnableDecoders" and set it to "1".

I'd closed regedit and started WMC and Dvd's did worked fine, as well in WMP...

No need VLC Player anymore and all those codec packages...

Cheers. AR

Humm doesn't work all time...it has been reset back.

What's about the cyberlink powerdvd one? Does it worth a try? It's suppose to be quality codec one...