I am new to Ubuntu. I've installed 12.04 version of Ubuntu. It works fine but sometimes when i shutdown my PC from Ubuntu and when I try to start it again,nothing shows on the screen.
It's always black screen instead of Acer logo (I have Acer aspire 5573) and the system restart again and again but and doesn't allow me to choose a OS (Ubuntu/windows,i use dualboot)
To fix this I have to remove the battery and put it again.Then everything works fine.
How do i fix this issue? I think that could be a incompatibility with the PC because everything works fine with windows.