I've just replaced my motherboard, and on booting from my system disc, it didn't recognise my hard drive. Found I'd connected wrongly, fixed that up, but my BIOS indicates it doesn't recognise any hard drive, floppy, cd rom or dvd drive. I've tried manually setting the primary/secondary/master/slave settings, then when that made no difference, reset to default. No difference, other than the cd rom "table" no longer presents, although all power led's work. What next ?