I just installed Ubuntu 13.04 on my HP 2530p Laptop with no other OS installed. All worked well but when restarting, after the BIOS screen, there was just a blank black screen reading "no system-disk or disk error".
Restarting multiple times, Ubuntu started normally. But upon the next restart, the same happened: "no system-disk or disk error" and I needed to repeat this procedure.
According to the "disk"-utility, my disk (Toshiba, 120 GB) is 47 Celcius degrees warm and has no disk errors.
Is this a Ubuntu-problem or a Grub-Problem (no Grub menue pops up because there is no choice at the start)?