can't get in to OS after update

[curveu]

hi everyone,

I selected "Install Update and Restart" from my Gnome UI, but after reboot I can't get into my system anymore. Right not the command line is frozen on a line called "Started Crash recovery kernel arming". Is there anyway to fix this? I've spent a lot of time get my system to work properly in the past weeks...

Thanks!

[curveu]

a quick update:
I restarted my computer again and now it's frozen on a line "Started Login Service".
it feels like it's frozen randomly after it finished the "progress-bar" part.

[TrevorH]

Had you previously installed third party video drivers from, e.g. ATI or nVidia? If you did not use the ELRepo packaged versions then they require reinstallation after every kernel update.

[curveu]

Thanks trevorH. Yes I installed the nVidia one by myself. Could you let me know how could I install it on terminal? I don't even know how to get into system on terminal. Now it feels frozen and I can't type anything.

Had you previously installed third party video drivers from, e.g. ATI or nVidia? If you did not use the ELRepo packaged versions then they require reinstallation after every kernel update.

[TrevorH]

Start up in command line mode by editing the kernel command line from grub. Once logged in, rerun the nvidia installer and reinstall it or run it in uninstall mode and then add ELRepo to your yum repository list and install kmod-nvidia from there. Their packaged version survives future kernel updates and is the recommended method to use.

[curveu]

Thanks TrevorH. Sorry but I'm a very new user for linux. Is there any detailed info on how to do this things?
- edit the kernel command line from grub and start up centOS 7 on command line
- rerun the nvidia installer and reinstall it (or how to uninstall it?)

Start up in command line mode by editing the kernel command line from grub. Once logged in, rerun the nvidia installer and reinstall it or run it in uninstall mode and then add ELRepo to your yum repository list and install kmod-nvidia from there. Their packaged version survives future kernel updates and is the recommended method to use.

Thanks,

[gerald_clark]

Boot the previous kernel. Install the driver from elrepo.

[TrevorH]

When you first start up you press Esc when you see the "Booting CentOS 3.10.0-123... in X seconds" text then hit 'e' to edit the kernel parameters. Scroll down to the line that starts with linux16 or linuxefi and hit the 'End' key to go to the end of the line and append a space followed by the digit 3 then hit Ctrl-x. This should come up in command line mode with a Login: prompt.