Windows 7 system logs started recording event ID 55 (NTFS) => The system structure on the disk is corrupt and unusable. Please run the chkdsk utility on the volume DeviceHarddiskVolume2.
WinObjutility from Windows Sysinternals or if you use WSCC like me then just use it.
Winobj.exeand go to GLOBAL section.
Sort entries by SimLink, find a device corresponding to the one in your syslog error and check name column for drive letters.
If it is the system drive (C: in most cases), then you will need to schedule CHKDSK to run on next startup. From elevated command prompt, run
chkdsk /f c:and then type
yto schedule on the next restart.