Hi, I am a professional musician using Vista home premium x 64 and sp2. I have an Intel Core 2 Duo CPU P8600 @ 2.4 ghz, with 6 gb of ram and my laptop is a HP Pavillion Dv7 notebook. My soundcard is a NI Audio Kontrol 1, and I know for a fact the issue is not with the soundcard hardware here, it works prefectly fine with other systems and always works flawlessly with xp.
I had this exact issue about a year ago, and contacted many experts who were just confused and eventually after about a month, the problem just dissapeared overnight by itself. But now it is back, and I dont want to just wait it out, as I need my laptop for music production.
The computer will work just fine unitl the sound will randomly drop out, and not just not make any sound, but the program running it will stop responding. From that point on, no sound will work. All programs work fine until they make a sound, then they will also stop responding completely. If someone Ims me in AIM, the bloop sound will freeze it; if i try to play a video or a tune in explorer or firefox, it also will freeze, etc...
I cannot open the sound panel in the control panel, or anywhere else. Most strictly audio programs (daws, wav editors, even itunes) will either freeze upon opening or not even open. Once the computer is in this "no sound mode", nothing i can do will restore sound short of turning it off.
When I try to turn it off, it shuts down normally (i have to force explorer to shut down as it freezes when playing the logoff sound), the display turns off, but it does not actually shut down. the fan keeps going at full speed and the lights on the laptop are still lit up. It will stay like this indefinitely (ive waited a while to see if it would turn off, but it didnt) until i force a shutdown by holding the power button down. If the sound issue does not occur, the computer shuts down normally without problems.
Everything is fine when I turn it back on for a period of time until it repeats itself. After a random time period, it will just stop working again. Nothing that I notice triggers it, the computer could be in middle of a video, or just sitting there doing nothing with the screen saver running. It has happened in pretty much any situation with an equal likelyhood. When I first had this problem (and this time as well), it takes less and less time from power up to do this. At first it would take a couple days, now after a week it happens roughly 5-15 minutes after.
I know a good bit about computer audio, but I have never heard of something like this. I have always had occasional pops and glitches in the audio (i assume from dpc latency spikes and confirmed it with a checker, altough i never found a source or solution), but i got used to that and this is a much bigger problem. I think it might be a driver issue/conflict, but I updated every single driver for anything audio/video, and uninstalled each and every one separetely with a clean install, to no avail. When the issue is occuring, there is absolutely nothing else out of the ordinary. All the problems I listed are the ONLY problems occuring. No scan reveals anything unusual, and all hardware and software reports to be working fine.
What could the problem possibly be? I have searched everywhere on the internet and have found nothing.
I really need this computer for music production, and this obviously gets in the way.