hello to all! 
today I tried to upgrade my whole system but it was so wonderful for be true.
I mean, I didn’t upgrade it well.
I followed the manual, refreshed repos, update packets, get new repos and installed new system.
OKay, then I reboot but the system switch from default mode to emergency mode.
where can I read logs?
how can I fix that?
thank you very much! 
Video card/chip?? Sounds like a graphics problem. Did you try a boot to failsafe?
yes, also I have had a problem with my pc when I installed openSUSE; I found my video card of my toshiba satellite A300D didn’t start.
so I searched for a solution and I find that during the installation I should added “nomodeset” to the kernel options.
I think right now, when I start the new system, I get the emergency or failsafe mode by itself that deny me to start the whole system.