Code:
5 Reallocated_Sector_Ct 0x0033 181 181 140 Pre-fail Always - 160
196 Reallocated_Event_Count 0x0032 076 076 000 Old_age Always - 124
197 Current_Pending_Sector 0x0032 197 197 000 Old_age Always - 287
The three attributes above indicates me that your hard drive is currently on the road to failure. We cannot tell exactly when a hard drive will fail in that state, it can be in years, like it can be months or just a few days. What you need to do right now is to back-up all your personal data that you want to keep, and start looking at a new hard drive to buy to replace your current one, since it is not safe to use anymore.