I was running Kubuntu 14.04 LTS 64-bit on Acer Aspire 5560G for some months. I have updated regularly without any troubles.
Today I have decided to upgrade to 14.10. Upgrade worked flawlessly.
After restart I am not able to enter BIOS. It prints to press F2 to enter BIOS, but it does not react at all. No grub is displayed. No Kubuntu loaded.
It restarts and restarts. Every 5 seconds.
When I press F2 it just shortly beeps and restarts in two secods. When I put Kubuntu DVD it reads it for a while (20 seconds) and then restarts.
I have removed SSHD and the batery. I have tried to press any key combination I could think of. Nothing worked.
Any ideas would be very welcome.
As far as I remember I had previously UEFI/EFI booting troubles after upgrading Ubuntu/Kubuntu to 14.04. I was glad I got it booting. So actually I do not remember the current status of the Bios/UEFI/EFI configuration.
But anyway, BIOS should work. Could it even be corrupted by the installation process?