Dark Helmet
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Sorry I have no experience with Windows 8.1, and wish I could help.
The problem is with the Windows 8.1 and motherboard. No issue on other computers. But I tried changing the drivers, updating chipset, different USB ports, now different USB cable. What happens when the music stops is the whole computer slows down to almost a freeze. Usually 5-15min within sound usage. Then I have to disconnect the DAC USB and sometime it's fixed, sometimes hard reset is needed. Nothing in the Windows logs indicating a USB or power failure. The only other USB item is my Razer mouse and it's in the USB3 slot.
I mean, I'm an IT guy and Windows certified, I keep my drivers and systems updated and clean. I don't know why this doesn't like the DAC. I'll have to try with a dedicated USB card.
I have an Asus laptop with 8.1. When I plug my Modi into the USB 2.0 port, it shows the exact symptoms you're describing. However, when I plug it into a USB 3.0 port, it works pretty well. Which is weird, considering most people seem to have trouble with 3.0 ports.
When I was using the USB 3 port I hade 50%+ system usage. So I solved the issue as follows:
- uninstalled all ASMedia USB 3 drivers
- restarted
- plugged in Modi to blue USB 3 slot
- disabled all enhancements
- disabled applications taking exclusive control of device
Seems that there is a problem with the ASUS chipset drivers for USB 2.0 when Modi is used there. Temporary solution is to use the USB 3 slots. If you have high "system" process usage, remove the drivers and use the generic USB 3 drivers.
I will inform Schiit about this.
Glad we could sort this out.
Anyone using the iFi iUSB power supply with their Modi? Curious to hear what improvement is.