I have 2 dvd/cd writers..dual layer +R/-RRW/RAM TSST corp cd/dvdw SH-S183. They burn to cd and 4.7 gig discs but cannot burn to 8.5gb. I have tried Nero, power2go and the windows software. various messages such as insert disc, when the disc is already in or burning failed after 20 minutes of cd drive light flashing or the bsd and a memory dump/crash. They can both however read 8,5 discs made on a previous pc. H E L P