Have you determined yet if you have an OEM os or retail? If OEM, you are probably wasting time...
In either case, I'd get the MFG's tools, and burn a bootable CD, copy the tools onto it, make the cd / dvd drive first in boot order, then do a full format with the MFG's tools.
Why? They will check every cluster, re-write the bad cluster map, and usually issue a report if the drive is damaged beyond acceptable limits to use for an RMA.
Time consuming? Yes, but how often does one do this? Fresh system, fresh drive, good to go. Patience yields long term dividends.
Google did a drive analysis a few years' back. It was interesting in its findings, as it covered many thousands of drives from many MFG's. In 24 / 7 use, the peak drive failure was around 3 years. If a drive went past that timeline, failure rate flattened out for the five to seven year timeline, then rolled off pretty fast. Useless information to you, perhaps.