The drive is in the process of failing. I would back up all your important data immediately and purchase a new drive. Keep an eye on Current Pending Sector Count. These are sectors that cannot be read and waiting to be reallocated. Your Reallocated sector count is zero which means sectors are corrupted but cannot be reallocated. If your Pending Sector Count keeps increasing your hard drive may be unbootable depending on which sectors fail and if they cannot be reallocated.
Thank you for much for your quick answer!
I see, so it is time to say good bye to this one. This isn't topic for this, but if you'd help with this one last thing - can you tell me why this might have happened? I mean, was it just old age for HDD or are there activities that can cause this? I have done quite many spyware and anti-virus checks along with disk checks - could these have put on more pressure and prematurely aged HDD? I only got this PC 6 years ago.
Edited by Worrieddo, 09 June 2016 - 05:48 PM.