I recently bought a Lynx TWO-C PCI card off a friend of mine. We installed it on my brand new Win 7 box. We installed the latest firmware and drivers (found on this website). 

Problem is it doesn't work at all! As soon as I open Sonar X2 it starts dropping out (I can see hundreds of dropouts rolling over on the Lynx mixer). And I instantly lose all sound. THe whole thing just crashes .I have to restart the PC to get sound back. I've played with all the ASIO settings in SONAR - nothing gets it working.

I've tried ableton 8 as well - ASIO drivers crash the card straight away (with the same dropout problem) and the MME drivers kind of work but with horrible latency. 

I can use the card fine for sound with games / movies etc - so it appears to be working with windows. But as soon as I open up Sonar or Ableton the ASIO drivers seem to crash the card. 

Is this a 64bit compatibility issue? 

Would be great if someone can help me - cause I'm pretty close to giving up!

Thanks,

Nathan

It wouldn't have anything to do with 64-bit if you have installed drivers that are even vaguely recent. What was the driver version that you downloaded? 

Do you know what type of motherboard is used in this machine? Most current chipsets use a PCI > PCIe bridge and some of them work with a device of this type, and some of them don't. 

Another issue to look out for, is that modern motherboards and Windows Vista and newer, implement very aggressive power management, including the ability to scale voltage to the PCI slots. There are some bios settings that help tone this down. 

If you have selections for CPU Speedstep, or C States (sometimes broken down to C1, C3 and C6), you should disable all of those. 

Also, in the Power section of Windows Control Panel, we recommend setting your Power Profile to "High Performance"