Help me fix Gnome - Centos 7

[opethdisciple]

This is my work desktop.

After a power cut yesterday my Gnome shell is corrupt. I've lost the maximise/minimise buttons, I have no menu at the top of the screen, I seem to have corrupted my network manager cannot nslookup anything, the keyboard layout has changed etc...

This is a centos 7 machine.

I want to refresh gnome some how on centos 7.

I was thinking of running:

yum group remove group_name

I can take a guess at the group name, but is there some way to see what groups are already installed?

I've tried various things to check what group is installed.

Most importantly tho, is this the right thing to do? A work colleague suggests I can delete my gnome profile and start again? He is probably right becuase even if I install the DE the configs for Gnome are corrupted in my profile.

All suggestions of this are for Ubuntu but I am on Centos and cant find any guide where they do this on Centos 7.

I'm working from home and doing this all remotely so I need to be careful not to bork it beyond all repair.

Lastly, if I did uninstall the desktop environment, and then reinstall it, will all my files etc... still be present? I'm sure the answer is yes but I need to check.

Thanks

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I fixed my network connectivity, by adding in dns to /etc/resolv.conf

 

[memyselfandi]

Have you tried creating a new user and seeing if there is corruption when logged in as that user. Would show whether the configuration files under your user are the cause of the issue.