0404USB Pops and Crackles

Question

I have just purchased the 0404 USB audio interface in hopes that it would solve problems I was having with the audio for Proteus X and M Audio Key Rig. So far no luck. My computer is a Gateway 7330GZ laptop running a Pentium 4 at around 3ghz with 512mb of memory. All of the system details exceed the specs for both the 0404 USB Audio Interface and Key Rig. Yet no luck in getting Key Rig to actually produce decent sound for any length of time. Too many crackles, pops and eventually almost straight pink noise. If used with ASIO4All key rig crashes after running for a few minutes. I am sure I could use some additional RAM but do not want to keep buying things under the hopes that one of them eventually will solve my problem. The "onboard" audio on my laptop uses a Conexant Audio driver. I can get Proteus to sound OK but the latency is unacceptable.
Any help would be appreciated. Thanks.
Message Edited by wagscpa on 03-31-200703:50 PM
Message Edited by wagscpa on 04-01-200707:58 AM
Message Edited by wagscpa on 04-02-200706:55 AM

Answer 1

I have downloaded and installed the latest drivers.
The 0404 is connected directly to the computer's USB port and reports USB 2.0 as its speed.
I have installed the production tools bundle of software.
Sonar's playback of audio on one of the sample projects works great.
Have adjusted latency all over the place and have not been successful with M Audio Key Rig. I can get Proteus X to work with significant latency but then I cannot play it properly because the delay is too great.
I have mostly used 44K and 48K sample rates, but I have tried all of the sample rates and latencies available.
I have stopped all unnecessary services, used msconfig to run only a limited array of drivers and programs, disabled the driver for the onboard audio card, and I have then used msconfig to load everything. Nothing solves this problem. I have uninstalled ASIO 4 ALL and ASIO2KS which are other ASIO drivers that I had previously downloaded and used. I have downloaded an ASIO test signal and it has the same problems which is that when a sine wave or a sweep is selected it crackles and pops. You can hear the sine wave frequency and/or the sweep but not without random crackles and pops. I used DPC latency checker and disabled almost everything in Device Manager, one item at a time and latency checker would never render a good report if anything was using the ASIO driver. I could run programs like Microsoft Excel, that do not use ASIO and latency checker would render a good report. But the minute I started a program that used ASIO latency checker would turn its green bars to yellow and red indicating that the system would not playback audio well.
I can play back non ASIO audio just fine. Unfortunately I only have a few days before my return period expires and if I cannot resolve this in the next few days I will have to return the product.
Thanks for the help.
Wags.