If you haven't already, download, install, update, then run a full system scan with the free malware removal tool from the link below. Delete anything it finds.:
If that doesn't fix the issue, then we would swap in a new DVD drive.. They frequently simply quit working..
Hope this helps.
I have a Sony Vaio laptop PCG 7X2L running Windows Vista 32 bit.
All of a sudden my CD ROM (Matshits DVD rom 8505 ATA) stopped running. It only plays audio CDs. When I insert a video DVD i get an error RUNDLL32 stopped working. I cannot install any programs from the drive as it does not read at all.
Appreciate any suggestions.
Thanks and regards,