In Windows 7 Pro SP1, HP S5730 Desktop, AMD Phenom II X2 511 Proc, 8gb ram. PCI-E card: "ORICO PUV3-2O2I",
About 1/3 of the time when we reboot the computer, the VIA USB 3 ROOT HUB does not appear at all in the device manager. (So there's no error message because there's no item). The only way to get it to appear is to reboot.
When it does appear, it is listed as "VIA USB 3 ROOT HUB", driver versions 5/29/2014, 6.1.7600.4701
The Orico driver download links leads to a via driver "VIA_XHCI_Driver_V4.70C_AP", I went to VIAs site and found the same driver, plus an older one from 2013, "VIA_XHCI_Driver_V4.40D_AP", but switching to that one made no difference.
I tried reseating the PCI-E card but so far no improvement.
When it is working, it works correctly at usb 3 speed. We normally have an "AmazonBasics" USB-3 7 port hub plugged the USB 3 PCI-E card.