missing xHCI root hub o driver

plugable usb 3.0 7 port hub requires xHCI ROOT HUB 0 on boot up. USB 3.0 CARD will not work. Systerm installed windows vista 32 bit. Will however work pluged into usb 2.0 slot. Do I need to open file from supplied disc running setup for the appropate file please advice the neccesary file from which could run required file/s xHCI ROOT HUB 0
PS ,concidering upgrading to win 8 x64 would this make a diferance.

Hi Michael,

Thanks for posting, I’ll be happy to assist. It sounds like there’s a problem with your USB 3.0 port. Can you say a bit more detail about it? Specifically I’m wondering what the make and model of your computer is and what type of USB 3.0 card it has.

If it’s a Plugable USB 3.0 PCI-e card, you can download the drivers for it here: http://plugable.com/drivers/renesas

I hope this helps, let me know how it goes.