Hi, I bought my Sony VAIO F12 earlier this year and it seems my BD-ROM will play blu-rays and CDs but cannot recognise DVDs. Is this correct? Every time I put a DVD in, it demands I insert a disc that isn't empty. It can also write CDs and, as well as me thinking it could read DVDs, I thought it could write them too. I always assumed if you had a BD-ROM it inherited the ability to read CDs and DVDs just like a DVD-ROM inherits the ability to read CDs. Am I wrong in my assumption? My assumption is just on reading the aforementioned formats, haven't bothered mentioning about writing. Cheers.