This computer has been sitting for well over 15 years, just installed a new CMOS battery after getting hard disk controller error. As far as it seems, that issue is no more.
Now the problem is "Diskette Error" which leaves me clueless because the only thing connected physically, or enabled on the BIOS, is the hard drive. Again, just to be clear; All disk drives are set to "Not Installed" in the BIOS. Everything is unplugged, except for the power connector from PSU to HDD, and the ribbon that runs from controller card to HDD.
I have tweaked almost every setting in the BIOS - related to drives or not - and it still remains. This is my first go with a computer this old, so maybe there's something I'm not realizing. I ask anyone for help, please. I have pictures of all BIOS screens as well, can post if requested.