I have a Power Mac 7100/80 which used to work fine. However, one day I got the Question mark on disk icon. So, I tried to reinstall OS 8.5, OS 8.1 and whenever I get ready to install the system software I get a window that says something akin to "This software cannot be installed on this computer. Please check user manual for more information." I, of course, checked the user manual which suggested that the drive might have an out of date driver. I reinitialized it updating the disk drver and that didn't do the trick. I'm still having the same problems. I even switched hard drives and I had the same problem with the new hard drive.
Does anyone have any idea how I can solve this?