I wouldn’t fixate completely on the power supply, there are different chipsets from a number of manufacturers which comprise the USB subsystem (TI (Texas Instruments) are one of the most common used), and some of these chipsets are known for causing problems with certain peripherals. This is perhaps an unknown problem hence the reason I mentioned before that you might try and find out which chipset is used in your PC/Laptop, and report this here or at least to Steinberg Service.