(Windows 7 PC) some video files playing with no sound, or with voice muted (like karaoke mode).

Daniel Burkus

Posts: 161   +7
Hi. I am not sure in which of the fora I should post this, so I decided to try the Windows forum first (since it seems related to NVIDIA -- which I assume is part of the operating system).

I am having a problem with my PC when trying to play video files (primarily), and am hoping that you can help me resolve this issue. My PC is running Windows 7 Professional. If there are any other PC details that you need, please tell me.

Two weeks ago (12/10) my PC started acting strangely when I try to play video files. In some instances there is no sound at all, or the sound is garbled, but most often it is the human voices in the soundtrack that are muted to the point of being inaudible (background music, however, is usually unaffected, which suggests to me that the modification might be related to the "karaoke function" in NVIDIA); yet some files play normally. The logical thing would of course be to look at the NVIDIA control panel and see if somehow karaoke mode has been turned on (I have never used this feature, but from what I have read on line NVIDIA has the ability to mute human voices while leaving the rest alone), but the control panel is inaccessible (it will not open; and I get an error message that shuts the control panel down if I try to open it). Removing the driver and letting Windows download a replacement did nothing to help.

The issue, as I said, is limited to certain video files (while others play without any problems, and a small number have no sound at all or sound that is badly garbled). This is true regardless of which (of several) players I have tried (and I tried deleting the players and reinstalling them, but that did nothing). The vast majority of my Mp3 files play just fine (in WinAMP), so whatever it is appears to be targeting video media. Also, while some CDs that I have burned myself work perfectly, others do not (the same sound issue); and the commercially produced DVD discs that I have (not many, so I do not know if it is a general rule or not) do not seem to be able to play at all. Likewise, streaming video presents in the same way -- some have sound, some have none or garbled, but the majority have the voice muted while the background music is unaffected. Therefore it seems not to be something that corrupts the actual files (CDs and DVDs are burned onto discs), but rather interferes with the data between the files and the speakers.

My first thought was that it might be a malware issue, and so I posted in the Malware Forum first. But Broni assures me that my machine is clean, and he suggested that I try the Windows or Software fora to see if one of them can help me. It seems it could be a hardware issue (video card is going bad), or a software issue (some sort of corruption in the NVIDIA drivers, for example).

There is no logic to the sound problems: the distortion seems to follow no fixed pattern, some files play normally for a while, then suddenly they do not play in parts, with varying degrees of loss of certain parts of the audio-track (though it seems the parts that play and the parts that do not remain the same every time the file is played); and in a couple of instances, the video does not play too (what shows up are a series of "stills"). Since whatever it is appears to be blocking access to the NVIDIA control panel, I suspect that the problem might lie there.

Thank you very much for your time, and for anything that you can do to help.

-- Daniel M. Burkus
 

verneronomous

Posts: 41   +5
Have you tried multiple video files such as MP4 or MKV or AVI? Wonder if its a codec issue. I have issues sometimes using MKVs on my media server but when I use mp4 I see no issues. Curious if its just file type related.
 

Daniel Burkus

Posts: 161   +7
Hi, and thank you very, very much for your reply.

Nobody was saying anything here in the Windows forum, so I decided to repost my description of the issue in the Software forum, and we were able to resolve things there.

It turned out that the NVIDIA driver was corrupt, and when I uninstalled it Windows was not downloading a proper replacement (I suspect it was just reinstalling the corrupted version of the file from some sort of backup location). After figuring out how to get the correct version from NVIDIA (the ones offered on the download page were not made for the 32-bit O/S, and my bad eyesight kept me from finding the option in fine-printed list below) and installing that, the problem was resolved.

Again, thanks for taking the time to reply. Please have a great day!

-- Daniel M. Burkus
 

verneronomous

Posts: 41   +5
Hi, and thank you very, very much for your reply.

Nobody was saying anything here in the Windows forum, so I decided to repost my description of the issue in the Software forum, and we were able to resolve things there.

It turned out that the NVIDIA driver was corrupt, and when I uninstalled it Windows was not downloading a proper replacement (I suspect it was just reinstalling the corrupted version of the file from some sort of backup location). After figuring out how to get the correct version from NVIDIA (the ones offered on the download page were not made for the 32-bit O/S, and my bad eyesight kept me from finding the option in fine-printed list below) and installing that, the problem was resolved.

Again, thanks for taking the time to reply. Please have a great day!

-- Daniel M. Burkus

Good find man. I like working on the odd ones. If something comes up let me know.