Need some serious help here.

Bros computer, can't start it up with two hard drives (One is the OS and things, and the other one is his music).

He asked me to take a look at it, because I'm some-what experienced in the computer world - I would say Advanced, but not Expert.

So I took the cover off, looked inside - and I've been trying to get the two hard drives to work together so the PC would start up!

I can only start the PC up with one hard drive (the OS one) - but for some reason I have to plug it in the second connector slot on the Mobo (My mobo has a blue slot, which is usually where your master goes and a white slot where your slave goes) but my computer only recongnizes the hard drive when it's in the second connector.

So on the BIOS it says it's "Secondary Master" - Not primary, I cannot fix this I've tried many ways..

So I can get the PC to start up with one HD - but not both! And when I plug my slave one in to the connector - My PC freezes as the boot screen...

Some specs:

Compaq Desktop Presario S00000
1GB of RAM
Windows XP Home Edition
Athlon XP 2600+ (2.13 Ghz)
CMOS Bios



(I've tried resetting the CMOS by removing the battery several times to no avail)

I NEED SOME HELP PEOPLE.

How does that computer even run? The Mobo is probably malfunctioning as the computer itself is super fucking old.