DVD Burning Problem with HP Pavilion dv5120us Notebook PC

Hi Friends,

I am using HP pavilion dv5120 us laptop with CD/DVD ± RW drive - 8X speed, LightScribe Writes to +R and -R DVD media .My Operating system is XP Home AMD Turon 64 bit Processor.I am using Nero 7 Ultra edition to burn my DVDs. But now It is giving error while burning DVDs. Using Nero i am able to burn 100% affter that it is giving Error. Burn process failed.
and after that my DVDs become useless.

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second problem is when i inserted new blank (Empty) DVD it is also not recognised. Both Free space and used space are showing it as
0 bytes. when i inserted empty dvd , it is showing it as CD Drive instead of CD/DVD Drive.

I have tried to apply Firmware. applied firmware to change my drive to Thoshiba CD/DVDW SDR6572M TR05 from TSSTcorp CD/DVDW TS-L532M. Is this firmware causing problems.

Here are my Nero info Tool( Find Attachments

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