HDD bay says not connected

[Dseeker]

I tried to install a new 40 GB harddisk into my laptop, but the drive was not recognized. The problem is, that when I try again with the old drive, he's also not recognized in the bios !
When I push the contral A button in the bios, I see "HDD bay Not connected"

Please, what can i do to solve these ?

Thanks in advance and sorry for my bad English

[Laptop_wizard]

Try taking a can of air, and spraying down into the slot.