I have the R300 error

This should fix it.

Go to MSConfig
2.) Go to Services Tab
3.) Hit "Hide all Microsoft services"
4.) Go to Startup Tab
5.) Hit Disable All.
6.) Try your disk
It worked? Good. Continue on.
7.) Go to www.sysinfo.org
8.) Under Startup, search all the things you have in startup, and only enable the ones that they suggest.
9.) After you have re-enabled all of these 'good' ones, try your disk
again. Did it work?
10.) Play your disk.
Please rate this solution.

it has to be a blue ray driver first so it can play the blue ray disc