Hi Cynthia,

It sounds like Windows is shutting off the power to the USB port your pedals
are plugged into. Open the Device Manager (right-click on My Computer,
select Properties, and click the Device Manager button on the Hardware tab).
Look for the USB root hub (or something that sounds similar) at the bottom
of the list, right-click to select the Properties, and look for the "Allow
the computer to turn off this device to save power". Uncheck that and
hopefully the problem is solved.

Good luck, Marc