Four months ago I bought a new Plextor PX-760A for my Dell 670 Precision Workstation. Until yesterday, I had only ever used this drive to read DVDs. I am now trying to use it to make data backups using Roxio Easy Media Creator 8 (downloaded yesterday) and Verbatim 4X DVD-R discs. However, I am having major problems.
Instead of writing at 4x it is writing at about 0.4x, ten times slower than expected! My Windows XP PC is also having other problems after starting such a backup. Other programs hang up until the backup is completed (after over 3 hours!) and then the PC will not close down properly. After a forced power off and reboot the PC once again behaves perfectly - until I start another backup. Despite all these problems, the backups are actually okay.
Following guidance on the Roxio website, I have taken the following action.
(1) Installed the latest firmware (1.04) for the PX-760A
(2) Set my PC to operate in DMA mode
(3) Uninstalled the PX-760A in order to force a reinstall of the driver
However, none of these actions made any difference. I then installed the trial version of PlexTools Professional XL that came with my drive and ran a DVD write diagnostic test. This produced exactly the same result as with the Roxio software, i.e. the write speed was only about 0.4x. It therefore appears to be a Plextor or Win XP problem, not a Roxio problem.
Any suggestions on how to make my DVD-RW drive run properly?