Bug Check 0x24: NTFS_FILE_SYSTEM
The NTFS_FILE_SYSTEM bug check has a value of 0x00000024. This indicates a problem occurred in ntfs.sys, the driver file that allows the system to read and write to NTFS drives.
More likely then not, you have a dieing HDD. Run chkdsk ASAP, in case your drive is failing, so you have a chance to backup your important data.
There is also a *small* chance a memory bug could cause this issue, and if so, I'd expect other BSOD's to pop up.