Samsung SATA DVD SH203 Drive hangs pc




I have recently procured a pc with the following specs

Intel 1.8 Ghz Dual Core
Gigabyte MoBo GA-73VM-S2
2 GB Ram
160 GB western digital SATA HDD
Samsung SATA DVD writer SH203
Windows XP SP2

I am facing a strange problem

whenever i start burning a DVD/CD the pc hangs within 25 seconds of burning exercise. I have to physically reboot the pc & when i try to write again i get error messages DVD /cd becomes unwritable.

Kindly advise what could be the problem and how could i resolve it.