Windows 7: DVD+ROM showing PMA Update error

OS: Dual-boot Windows XP Professional x32, Windows 7 Ultimate x64. (Windows XP earlier OS)
CPU: AMD Athlon 7750 x2
RAM: 4GB
GPU: Nvidia GeForce 9500gt
HDD: Seagate 500GB
Windows Xp installed for around 3 years, Windows 7 for about 1 year. The pc is about 3 years old.



Hi guys.
My DVD burner is HL-DT-ST_GH22NS70, around 2 years old. For the last few days, most of the dvds that I tried to burn failed. It was like for every 2 dvds that burnt successfully, the next 3 failed. While in Imgburn it failed at the start itself, in Nero 10, it failed when writing the lead out; each time showing PMA update error. Suspecting it to be a software problem, I booted into my Win XP Professional OS. There I burnt 4 discs in a row using Imgburn without any problem. So I am guessing something is wrong in my Windows 7 OS with the drivers or software concerned with burning. What do I need to do? Thanks in advance.