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Windows 7: Audio/Video Glitch During Any Kind of Playback

04 Aug 2011   #1

Windows 7 Home Premium 64 Bit
 
 
Audio/Video Glitch During Any Kind of Playback

Hello.

I have had this Windows 7 laptop for about a year and a half now, and ever since Monday (August 1st) I have been experiencing problems.

Basically, ever since then I have noticed a recurring problem during audio/video playback, in which it will occasionally stutter. I often listen to music while browsing the internet, and so this problem gets very noticeable.
I can determine that it is not the files I am listening to, since it seems to happen during any kind of playback - In Windows Media Player, Spotify, and even YouTube browsing.

What's even more strange is that sometimes, while recording my voice (I do so quite often) I noticed the recording becoming ruined due to this problem. Here is a small audio sample that shows what happened:
Messed Up Audio Sample
(Right about where I talk about Diablo)


However during playback, instead of a speeding up, it's more of a grinding/stuttering/slowing down in the audio and video. I can even notice my mouse stuttering and glitching when this happens.

This makes all of my recordings useless, and my job involves recording, so I simply must fix this problem. Ever since noticing the problem wasn't going to alleviate itself on August 2nd, I have been searching heavily for a solution.



Please do not suggest that my computer is not powerful enough to take playback; I have been doing this same thing ever since I got the computer (over a year ago) and have only recently been experiencing problems.



I will say this; on Monday I did have a small virus encounter with the Win 7 Security 2012 thing, the rogue antivirus. Luckily I was able to get rid of it very quickly with Malwarebytes.
I have already used CCleaner to fix any registry problems.
I only say this because I'm not sure if it will help someone figure out exactly what my problem is. However I am fairly certain that it's not another virus; I do regular scans that haven't found anything else.


I can't figure out what might be causing this, as it happens randomly. I have done countless things, including (but not necessarily limited to; I may have forgotten things):

-Updating my graphics/sound/chipset drivers
-Disabling Avast (thinking that maybe it was scanning every media file I was opening)
-Defragmenting my computer (this caused me to not be able to do a system restore to Jul31, which was going to be my backup plan)
-Getting new versions of Shockwave and Flash

If anything may be connected to it, I'm thinking possibly internet usage in general. Last night I noticed that the problem happened more often once I had Skype open, and even more often as I was loading something large online. However I of course can't guarantee that's the problem.


Please give me some guidance here. I do not have the money to buy another computer, and (as I said earlier) my job depends on this computer to be capable of watching and making media.

Thank you.


My System SpecsSystem Spec
.

04 Aug 2011   #2

Windows 7 Home Premium 64 Bit
 
 

Sorry, for the double post, however I think I have an update on the situation.

I disconnected my internet and watched some videos (ones I had stored on my computer, which required no active connection to view them) and had no problems. I then reconnected and watched them, and had some occasional problems.

So basically I'm saying that I am now 90% sure the problem lies somewhere within my internet, however I don't know exactly what is wrong.
My System SpecsSystem Spec
04 Aug 2011   #3

Windows 7 Home Premium x64
 
 

I don't know how your internet connection can influence your sound, unless you have integrated sound, then my first guess would be: the motherboard. However, that sounds a bit dramatic.

Did you try updating the network drivers, if any?
My System SpecsSystem Spec
.


04 Aug 2011   #4

Windows 7 Home Premium 64 Bit
 
 

As I said in the OP, I updated my chipset drivers.. Not sure if that's what you meant necessarily. And remember that this isn't just sound, it's also the video.
My System SpecsSystem Spec
04 Aug 2011   #5

Windows 7 Home Premium x64
 
 

I don't really know what to tell you. Perhaps the problem with this rogue AV and its removal screwed up something.

Did you notice that AV before august 1st? If not, you can try and do a system restore to a point before August 1st; so both the problem and the AV problem.
My System SpecsSystem Spec
04 Aug 2011   #6

Windows 7 Home Premium 64 Bit
 
 

I know for sure that the rogue showed up on Aug1.

And as stated in the OP, I defragmented my computer (thinking that it was possibly a RAM issue) which unfortunately deleted all of my restore points, making it to where I can't seem to go back. If you happen to know some way to go further on older points (at least Jul31) then that would help, though I don't think it's possible.
My System SpecsSystem Spec
04 Aug 2011   #7

Windows 7 Home Premium x64
 
 

Me neither...
Well, let me see if I can get someone else to read the thread and post; if not, you may have to resort to reinstalling the OS.

At one point I thought of sfc /scannow but I'm not sure if that would help you, as this cmd command looks for corrupted and patched system files (like the ones needed to be patched in order to use third-party themes) and tries to restore them to their previous state.
My System SpecsSystem Spec
05 Aug 2011   #8

Windows 7 64b Ultimate
 
 

Quote   Quote: Originally Posted by TheStormPow View Post
I know for sure that the rogue showed up on Aug1.

And as stated in the OP, I defragmented my computer (thinking that it was possibly a RAM issue) which unfortunately deleted all of my restore points, making it to where I can't seem to go back. If you happen to know some way to go further on older points (at least Jul31) then that would help, though I don't think it's possible.

Please explain further. You might be using incorrect terminology and that would confuse us when we try to help.

Defragmentation is a term used for the defrag of data on the harddisk, no relationship with RAM whatsoever, other than the indirect relationship, possibly of the paging file and its performance.

Defragmentation also does NOT influence restore points. If you lost those, it must have been through some other action. Previous versions of files: frequently asked questions

Or maybe you used non standard tools to optimize your system, including defrag, that did more than they were meant to.

A bad lan connection, either HW-wise or contentwise, could cause the difference in performance or functionality that you describe however.

A next step to try to isolate that is to use your preferred method, any will do, to monitor network traffic while you play a video and see if peaks in traffic match your glitches. Same way, check CPU usage at the moment of those peaks.

If you need any help on that, please post back.
My System SpecsSystem Spec
05 Aug 2011   #9

Windows 7 Home Premium 64 Bit
 
 

Quote   Quote: Originally Posted by Gornot View Post
At one point I thought of sfc /scannow but I'm not sure if that would help you, as this cmd command looks for corrupted and patched system files (like the ones needed to be patched in order to use third-party themes) and tries to restore them to their previous state.
I did the sfc /scannow and it said "Windows Resource Protection found some corrupt files but was unable to fix some of them".
It also said "Details are included in the CBS.log windir\Logs\CBS\CBS.log. For example C:\Windows\Logs\CBS\CBS.log"

And now the command prompt is acting like I should input another command.

I tried to open the log, however I got an "Access denied" error and couldn't open it.

So should I restart it to put whatever fixes it supposedly did fix into place, or is there something I can do to fix the ones it couldn't?

Quote   Quote: Originally Posted by MvdB View Post
Defragmentation is a term used for the defrag of data on the harddisk, no relationship with RAM whatsoever, other than the indirect relationship, possibly of the paging file and its performance.

Defragmentation also does NOT influence restore points. If you lost those, it must have been through some other action. Previous versions of files: frequently asked questions

Or maybe you used non standard tools to optimize your system, including defrag, that did more than they were meant to.
Well I used the standard "Disk Defragmenter" application that's been in my Windows 7 ever since I got it. Unless the virus I had deleted my restore points, I don't know what else would have.

Quote   Quote: Originally Posted by MvdB View Post
A bad lan connection, either HW-wise or contentwise, could cause the difference in performance or functionality that you describe however.
Well, there haven't been any changes that I know of to our connection that would cause this problem. And it would be awfully coincidental if our lan somehow caused a problem on the same day that a bug on my computer came around.

Just do further elaborate on my current situation with the internet..
In one room we have our DSL modem (Motorola) and a wireless router (Netgear). There is a desktop in that room running directly off of the modem.
Then there are two laptops, one is mine and the other is my sister's. Both of our laptops have built-in wifi adapters of course, picking up on the signal. As far as I've heard, her laptop isn't having any issues, nor is the desktop.

Quote   Quote: Originally Posted by MvdB View Post
A next step to try to isolate that is to use your preferred method, any will do, to monitor network traffic while you play a video and see if peaks in traffic match your glitches. Same way, check CPU usage at the moment of those peaks.
Well I assume that using Task Manager is sufficient for something like this?
This picture should show what's going on; I'm not really noticing any particular differences while watching video and not (during both screencaps, the only network-involved thing that was running was Firefox, but it wasn't even loading anything at the time).

My System SpecsSystem Spec
05 Aug 2011   #10

Windows 7 64b Ultimate
 
 

SFC should always work. I'm not sure if it should solve your original problem yet... but I am sure something is wrong if SFC cannot finish successfully. It means that basic Windows 7 files/drivers are not fixable and that is never a good thing.

How exactly did you run SFC? As admin?

Quote:
Run a system file check to verify and repair your system files.
To do this type cmd in search, then right click to run as administrator, then
SFC /SCANNOW

Read here for more information SFC /SCANNOW Command - System File Checker
If this does not work, reboot in Safe mode and do the same.
My System SpecsSystem Spec
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 Audio/Video Glitch During Any Kind of Playback




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