LinuxQuestions.org - Boot stopped at UTMP update complete

After CentOS completes the UTMP update, there is no further change in the 'progress polling....'. It doesn't boot.
Tried recovery via bootable USB but failed. help!!

there are some log:

Code:

Welcome to CentOS Linux 7 (Core)!



[OK] Stopped Switch Root.

[OK] Stopped Journal Service.

Starting Journal Service...

Mounting Debug File System...

[OK] Listening on udev Control Socket.

[OK] Stopped File System Check on Root Device.

[OK] Stopped target Switch Root.

[OK] Reached target Host and Network Name Lookups.

[OK] Listening on /dev/initctl Compatibility Named Pipe.

[OK] Reached target User and Group Name Lookups.

[OK] Listening on LVM2 poll daemon socket.

Mounting POSIX Message Queue File System...

[OK] Started Update UTMP about System Runlevel Changes. Completed Startup. progress polling....