I am currently using a new computer with the this board - DH77KC.
My computer always shut down suddenly.
Eventually I took the computer to repair and no problem was found in the support center (they helped me to replace all the things and however the problem getting worse).
I tried to detach my Buffalo USB 3 harddisk and it worked fine (may be it works fine several hours and it will shut down suddenly again but I don't know is it the case)
However, once I attached it again, it shut down suddenly again...
So, any guys use this DH77KC Destop board with same problem?
I hope I could get help from intel support team but I found it is really difficult to email them and eventually i post the problem here.
I understand that every time that you plug in a USB 3.0 device, your system shuts down.
I recommend you to uninstall your current USB 3.0 drivers, update the motherboard BIOS and then reinstall the USB drivers.
We had an issue reported that was solved with the latest BIOS.