Mark Twain wrote:
Here's the third HDTune scanof the 780:

http://i66.tinypic.com/5byyrq.jpg

and here's the error scan:

http://i64.tinypic.com/2q3dr1v.jpg

Robert

With regard to the second picture, the drive
has to be "near death" for you to see red squares
in the bad block scan. That's because, as long
as there are spare sectors to substitute, the
drive can maintain a semblance of health. If you
did see mis-colored (non-green) squares, you'd
want to replace the drive at your earliest convenience.

*******

I can show you some mis-collected scan results. Here,
I test my Win7 drive, a 2TB drive, and it looks
shockingly bad. The circled items on the right, are
examples of things that might interfere on this setup.

https://i.postimg.cc/85kyDyGc/busy-d...ample-win7.gif

Now, if I set up two drives, the "suspicious" win7 drive
and a Win8.1 boot drive, I can try testing with the
network cable disconnected to reduce interference.
If the network is available, modern OSes like to check
Windows Update. Pulling the network cable helps tame them.

You can see here, my Win7 drive is actually perfectly healthy.

https://i.postimg.cc/wM8QM08D/test-w...-when-idle.gif

Whereas the Win8.1 OS drive, still managed to interfere
with my testing. Here I'm scanning the C: drive, so you expect
trouble. Only Win2K would allow this test to run unimpeded :-)

https://i.postimg.cc/d3YGw3rB/win-8-...ence-still.gif

That's how tricky this stuff is.

Paul