I had a problem similar with optiplex 745, but i solved when modify /boot/grub/menu.lst
# defoptions=quiet splash for this # defoptions=quiet splash reboot=b
Maybe help you.
I had a problem similar with optiplex 745, but i solved when modify /boot/grub/menu.lst
# defoptions=quiet splash
for this
# defoptions=quiet splash reboot=b
Maybe help you.