I have just replaced my mobo as the old one had a faulty USB header. The new ("used") mobo is a different model to the previous one but still Gigabyte. I now have a 7VT600 1394. When it tries to boot it say "Serial_CH0 Master : No Device Serial_CH1 Master : No Device" it's the same for Ch1. It then offers option to start Windows - normal, safe mode ........, but no matter what I select it starts to reboot and repeat the cycle. I can enter the BIOS and all IDE devices are detected correctly - HDD, DVD DVD writer. I have tried swapping the IDE cables around on the mobo but no difference. Any ideas please?