I have a weird problem - on my Lenovo Z570 I cannot change the default boot order.
I am trying to load a bootable DVD and I have two hard drives. The boot sequence has the DVD drive as last, but when I bring it on the top, hit F10 and reboot, the changes seem to be neglected, as the PC boots from the hard drive anyway. When I open the BIOS after I'd changed it, it's back at the defaults.
I can boot from the DVD using F12 and choosing the appropriate boot medium, but that won't allow me to finish installation from the DVD as I need the DVD to boot again after restart.
What could be causing this?