TSSTcorp CD/DVDW SH-S182M

Hi, can you help me with my dvd burning problem? The problem is when my DVD burner starts burning the disc (DVD,)in the middle of process it stops burning and it will generate an error, I dont know what is this. I repeated the process 4 times but still it occurs. I though it is only the discs has a problem but I have a feeling it is not. I try to burn and audio and I dont see any problem, I try to play movies DVD / DVD 9 format and they work fine. the only problem is the burning of DVD movies it does not finishes. if you are going to ask my PC Specification please see below:

OS: Windows XP professional
processor: Pentium 4 2.4GH
memory: 768mb (pc 333)
Hardrives: 1 40GB and 1 80GB
Videocard: 128mb Inno 3D
Optical Drive: 1 DVD burner (samsung TSSTcorp CD/DVDW SH-S182M)
1 CD burner (samsung CDRW)
PCI: PCTV

Please let me know the problem of my drive

Thanks in advance