Hi Sylvie,
tried it with no success. It doesn't matter if anything is connected or not. When there are USB-HDDs connected the Board reboots in POST in 90% of the cases. Sometimes it functions, but very rare. If the Computer boots up, everything works properly. If i connect the drives after booting, everything works correct too.
The thing with the USB 3.0 drivers has imho nothing to do with the problem. I'm talking about Problems on the POST-sequence. There are no windows Drivers loaded at that time, it's happening BEFORE booting the OS. I even tried it with an blank system HDD without anything on it. Makes no difference.
I think it's similar to the other problem with the wrong temps on RAM-sensors. There must be a faulty piece of code in the BIOS, what powers the board down after checking USB-ports with HDDs.
Greets
Tom