Here's the manual. Copy down the BIOS settings and input manually. If that doesn't work, if you are using DMA swop to UDMA or vica versa. Sam with the cable. Just see if you can get it to try a different operating mode in case it's a software glitch.
At the end of the day, if the BIOS won't recognise it as master or slave in any mode, and you've swopped the cable, The other option is to try and replace the motherboard. Tricky, but cheaper than data recovery, but lost cash if it doesn't work. Buy a second hand working drive, should be cheap, and cannabalise it.
Fujitsu manual
Secondhand Price