the CD-ROM drive right???

YES i hear spinning on it....

but i can't see the bios settings if i will connect the cd-rom drive....

if i will disconnect it... I can enter the bios settings.....

here is the priority configuration:
1. floppy
2. HDD
3. CD/DVDwhen i can enter the bios I set it like this:

1. cd/dvd
2. disabled
3. disabled

or

1. cd/dvd
2. hdd
3. disabled

but still the same prob....You usually press the plus and minus keys to move your devices up and down in BIOS.
Try this order:

1. CD drive
2. Floppy
3. Hard drive

Are you saying that, when you connect the CD drive, you cannot get into BIOS? yes... I can't get into bios...

i PRESSED f2 for the bios.....

i keep press f2 when the cd-rom drive is connected.. but still i can't get into bios..That is odd.

Do you have another CD drive that you can try?Yes, I have...

but i already tried it...

still the same.....

i tested the cd-rom drive already in the other COMPUTER... There is no problem in the CD-ROM drive....

I think it is the mobo.... i've try the other IDE cable... the new one but still the same