Laptop toshiba not see hard ata bios

[Guest]

hi
my hard disk an my toshiba m45 is dead (mk8026gax) and I tried to replace the 30gb (mk3025gas) one and the computer not seen in BIOS
i have the same problem whith my optical drive
tk

 

[buwish]

It could be the sign of an issue with the motherboard if either drive isn't being detected at all. When did the CD drive disappear from the BIOS/Windows? Was it about the same time the old hard drive went out?