Optical drive problem!! Please help!!

[a61elz]

Hi,

First of all, sorry my english not very well. My name is Daniel, I am a new user.

I got a problem with my computer, I want to use 3 optical drives (dvd rom, cd writter and dvd writter). Before is working fine, but now the computer won't recognise the one of my drive. I put the first IDE in motherboard for hdd and cd writter, the second IDE for dvd rom(master) and dvd writter. The computer won't recognise the cd writter. I don't know what is wrong, because a couple weeks a go it's all drives was recognised. I already changed the IDE cables but still same. They're only recognised the hdd, dvd rom and dvd writter. I already looked for the BIOS, but couldn't find anything according this matter. Everytime I put the IDE cable same with the hdd the one of my optical will not recognised.

My system:
ASUS a7v8x
athlon 2500xp
windows xp pro
dvd rom liteon
dvd rw pioneer 105
cd rw liteon
seagate hdd

Please help and thanks!!!

-DanieL-