I was upgrading 13.04 to 13.10.And suddenly it hanged and upper part of the screen went black. So I stopped the upgradation and unfortunately I forcefully shutdown.But its already upgraded to 13.10(I feel upgradation is not complete though)
Problems The desktop flickers now and sometimes the screen turns black.
Sound stopped.No sound output detected in sound settings.And the shutdown button also not working.
Is there a way to upgrade it again to 13.10(completely)?