I tried to mount my drive , and after that before unmounting I tried to delete the mounted folder , then start these problems
After reboot forcefully

1.Before logging in , pops up a window
User's $HOME/.dmrc file being ignored. File should be owned by user and have 644 permission , file should be owned by user not others

2. After showing desktop , another window pops up

Failed to apply network settings

org.freedesktop.DBUs.Error.spawn.PermissioInvalid:
The permission of setuid helper isnt correct
You might not be able to connect to bluetooth network via this machine

After that I cant login as root or as sudo . And restart option , shutdown all are absent after these , internet cant get accessed

Please help me to solve this problem , I browsing thru now Windows(Which I hate)