I just have to take the usb connection and unplug it from the computer, and plug it back in. Believe that?
Yes, I believe that. Plugging the USB connection back in triggers the laptop to power up the USB port.
From your posts above I suspect that your laptop is turning off power to the USB ports, a common thing for laptops to do to save battery power. Of course, they shouldn't do it when the USB port is in use, but maybe the laptop detects the loss of signal between tracks and turns off the power then, or maybe it is a crappy laptop.
The good news is that you should be able to find a setting either in Windows or the laptop BIOS to keep USB ports on all the time, or even just one USB port, that you will use for the Radial USB PRO DI DAC. In fact you may even be able to tell Windows not to turn off the DAC itself no matter which port it is connected to.
Windows > Device Manager > find your DAC in the listing > double click the DAC to open properties, or right click, Properties > Power Management tab > Make sure that "Allow the computer to turn off this device to save power" is not checked.
If that setting is greyed out and "Allow this device to wake the computer" is checked, uncheck the later (should be unchecked anyway for your use), and then uncheck the first setting.
See how you go with that.
If that doesn't work, then in Device Manager, select the the DAC, then on the menu at the top of Device Manager, select "View > Devices by connection". You should see a layout something like the attached image, where I am using my G700 USB mouse as an example USB device. Now check the power setting on each step in the chain (red arrows) from the USB Hub to your DAC, and make sure none of them can be turned off by the computer (setting at blue arrow).
If that doesn't work, check the Power Management settings in your laptop BIOS, and see if you can set it to always keep its USB ports turned on. You shouldn't need to go this far, but if the above didn't work, this is worth a try. I can't advise on what settings you will find in the BIOS, because they are all different. But there should be a Power Management or similarly named section that controls power usage by devices, like the USB Hub in the laptop.
Note that all of the above will use more battery power, from least to worst in order above. So it is good that the laptop will be on charge/power supply when you are using it.
If none of the above work you may want to contact the supplier and see if there is a setting for the DAC to always keep itself turned on. Some devices can tell Windows to do that. Because it really does sound like the DAC is being turned off, which stops playback.
Let us know how you go.