I installed a SamsungTS-H552 DVD writer to replace my CD writer. I set it to master just like the CD writer and used the connections in my computer. XP Home found the DVD and it appears in my computer and the system states that it is working. The Trouble is that it will not read a disc not even the disc supplied with it. Add to that my DVD ROM will not read any disk as well now. In propertise,in my DVD ROM the only way I can see any data is in Volume. Changed my DVD writer back to CD writer and all returned to normal. Would be grateful for any advice.