Suddenly XP can't read DVD+R

[AngusMacGyver]

Hi, guys (and girls)!
Suddenly, XP stopped reading DVD+R media, even those recorded by myself. I have 2 recorders (LG 4081 and Pioneer A06) and both are unable to read DVD+R media. They can read -R, -RW +RW and LG one can read DVD-RAM. Also, they record all kind of media and pass in Nero's verify test after record. In 98SE I can read all kind of media too in both recorders with no problem. It seems a software problem, doesn't it?
Does anybody know why it's happening?
Thanks in advance.
Rafael.

[yoda313]

Ok first the simple stuff. Have you rebooted or shut down yet? Sometimes it could just be a hangup somewhere.

[AngusMacGyver]

I've used that "NASA's technology" many times, I've removed devices from Device Manager, re-installed VIA 4x1, etc...
As I said, in 98SE everything works fine.

[coodbe]

All of my drives on the Window's XP stoped recognizing disks. I kept getting please insert media. When I put media in the tray and inserted it the light to the tray would blink than nothing. I found out that it was AnyDVD and DVD43 that were causing the problems. I only activate them when I am burning copy protectected media.

[AngusMacGyver]

I don't have that kind of software installed here. I'm going to check programs in startup to see if there is anything weird.
Thanks a lot.
Rafael.