problem with 2 DVD-RW drivers

I have to different DVD drivers:


and both of them I can't make work with windows 7.

LG it doesn't even recognize the dvd I insert, and it freezes even if I just open "My computer".
Sony it recognizes but everytime I try to play a DVD or click a data it freezes and I have to restart.
But both of them are recognized in BIOS and by windows.

I don't know what to do anymore. Already updated firmware for both of them.
I tried start the pc without the 2 plugged together also. (one by time)

My pc specifications:

AMD Athlon 64 x2 5200+
2x 1gb RAM kingston DDR2800
Asus M2N-VM DVI motherboard
2 HDD:
500gb seagate SATA
160gb samsung SATA
ATI Radeon X1950GT
Corsair 400w power supply

I would really appreciate if someone can help me. And sorry if has been already solved before, i searched a lot here and outside the forum, and couldn't find the answer.


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