Originally Posted by Fred Caro
I'm assuming that your boot chainloader is now grub2 and your computer will not automatically turn off after exiting either o/s. If so then this sounds like a power management issue. If so then this means that processes have been shutdown and give rise to a lack of response; if if hangs with type (characters) on the screen in a terminal typical window, try ctrl+D.
Starting linux first and from a terminal, typing as root, try 'shutdown -f now' (no quotes) what do you get?
thank you very much for your suggestion. first, only the linux side does not completely shutdown. it does not hang at all. just reboots. i tried upir suggestion to do"sudo shutdown -f now"(w/o quotes). it brought a message that it was doing maintenance and went on to show linux mint logo with the five dots all lit. it was like that for over 30 minutes. i finally had to power off as it won't shut down using the off button.
it still won't completely shutdown but responds to button off, not necessarily power off.