Im running a Guitarport through my laptop on windows 7, Im finding that I am getting a very low gain output even when using very high gain presets, the volume also seems to be low compared with playing iTunes etc through the Guitarport, I have tried all USB ports with the same results, I have run the Guitarport in a MacBook pro and the output is much better so presumably it is an issue with the USB ports on the laptop but Im just wondering if a) is this the case? And b) is there anything I can do to combat this.

All drivers and software upto date btw

Thanks