Once you have installed HD Tune, you just open the program and click the Error Scan tab (it starts with Benchmark by default). You then click the Start button and let it run until it’s done. Depending on the size of your drive, this test could take anywhere from 30 minutes to 3-4 hours. You can still use your computer while the test is running, it will just run a lot slower.
Once the test is done, the whole thing should be filled with green squares. If you see even one red square, that means your drive has a bad sector and we recommend getting it replaced ASAP. It’s a good idea to save the end result for future reference, which you can do easily by clicking the floppy disk button. Make sure you put the date you ran the test at the end of the file name, that way you’ll know when you last did a test.
If your drive does need replacing, we can transfer everything over to a new or Refurb drive so you lose nothing (programs and data). You can keep using the drive even with bad sector(s), but sooner or later Windows is going to put an important system file in one of those bad spots and crash so why take the chance?