Just installed Ubuntu 12.04 on my computer. When I restart I do not have the option to go to either Windows or Ubuntu. I get a black screen with this text in the top left corner:
7.691547 KVM: disabled by bios.
Then Ubuntu boots up...
I am new to Ubuntu and have installed it beside my existing operating system and letting the default installation settings do the job.
How can I have the option to choose between operating systems when I reboot or turn on my computer?