Hi,
That chkdsk log confirms my fears - your HDD is definitely on the verge of failure and looking and the log, it seems it could die any time soon. Please backup all personal data with the upmost importance, and look at either purchasing a replacement HDD or getting a warranty replacement.
Can you run a SHORT, LONG and SMART test with SeaTools for me:
Hard Drive (HDD) Diagnostics - Sysnative Forums. Report back the results.
Stephen