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

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)