Thanks for your response I will try the tool that you have advised and see if it helps with the DCOM errors etc.

In the meantime I wanted to post an update regarding the BSOD's that I had experienced on the system, since removing the LG ODD I have not had any BSOD's or CD Rom error messages flag up in Event Viewer, so it seems that either the drive had a hardware fault or there is some issue with the firmware on the drive. I have connected my Sony ODD to the same port controller on the motherboard and its functioned okay without any issues so it looks like the mobo sata ports are okay.