Hi all,
Here's an interesting one that I can't seem to get to the bottom of! I have just installed an IcyBox IB-867 5.25" card reader/USB hub into my PC. I have hooked up all of the connectors required (1 x 20-pin internal USB 3.0 interface, 2 x USB internal connections, 1 x SATA and 1 x 4-pin power). All of the USB connectors work fine, so I know that part is connected properly and there is power.
The problem is with the actual card-reader slots. The power light doesn't come on, and no cards are recognised when I insert them. However, it DOES work if I pop the PC open whilst it's running, unplug the 20-pin USB 3.0 cable from the motherboard, and plug it back in again (whilst the PC is still running). At this point windows detects a new device, the card slot power-indicator turns on, and everything works fine. As soon as I turn the PC off and back on again, the card reader is no longer detected. Basically, if I want to use the card reader, I have to unplug and re-insert the internal USB 3.0 connector whilst the PC is running every time.
Motherboard
GA-990XA-UD3
Processor
AMD FX-8350