Format HD With Too Many Bad Sectors?

This notebook started to behave badly and I found that the problem is the HDD.ItFor you to get the scenario: I first ran the Windows native disk tool and it reported no problem. But the system was still slow and freezing.So I made some googling and ran Check Disk GUI, but it couldn't complete its job. So I started to figure out that the thing was a bit harder than I first thought.I tried to defrag and optimize with Auslogics Disk Defrag Portable, and it too couldn't go all the way.I tried PartitionGuru, which, finally, could do the job � in more than 48 hours of disk scan! And it reported: "Disk verify completed. 548 bad track areas found."After all that, things went worse: I couldn't start Windows, I got a "Missing operating system" message...Then I tried Wondershare LiveBoot 2012 to no avail.The last effort I want to try is use some portable app (running from a USB pen drive) to format the whole HDD.The HDD in question has three partitions. C: (system), D: (data, I created this partition), and a hidden one that keeps the data needed to restore the Acer notebook to its factory settings.If I succeed to format the whole thing, I'll try to make a fresh install of Windows 7 Home Premium. I want to format the whole HDD (from a USB pen drive) to have one single partition.