@ Peter_UK:
It is good news, that the IRST software v12.5.0.1066 is working fine for your system, but you obviously do not have any optical drive connected with an Intel SATA port.
That is a big difference to the systems of Antonio, Jim, telemeh, win7ine and Nomad_Soul, where at least 2 optical drives are managed by the Intel SATA Controller.
