OK you clever chaps....here's a problem my PC has a DVD writer installed.....it's an NEC ND-1300A with the latest NEC firmware (checked with NEC website). It's the master unit on the secondary IDE (with an Artec CD rewriter as slave) The problem....it has ceased to recognise DVDs! Put a DVD in...the LED on the front lights up for a few minutes....then absolutely nowt! Popup box appears and tells me to insert a CD. There's "nothing wrong" with the DVDs themselves..they work fine on our other PCs. I've used the Nero utility "Infotool" and it tells me everything is OK. Windoze tells me it's a NEC DVD writer....... CDs are no problem....they work perfectly (both audio & CD-RAM) The only changes I've made recently to the system is installing iTunes and Napster (SWMBO & daughter have got iPods!). Anybody got any ideas about what's going on?