1. A challenge was tormented and suffered for a week. I also had weak computer and Windows XP. I just did, bought a new usb cable in the store, but was not able to run all six of the generators on this system. Then he began to understand and realized that not enough power the usb port even via a usb hub. Even because of this system I have night hung three generators and refused to work. Therefore, I recommend to install Windows 7 Starter and all the problems solved!
2.Do you have also a USB 3.0 Port on your Notebook?
Maybe there is a handshaking problem between the hardware (HUB 3.0) and the chip set of the notebook and WinXP. There would be better a USB 2.0 HUB.(Maybe)
For more details, please check the link: