super7, you're accused of manipulating the hours on the HDD. Don't switch the topic to something like "it's working blahblahblah" ignoring the accusations completely. Pretty clear here you have no answer to this, you're a dishonest seller with intention to mislead.

I sell you a car, then change the mileage from 100,000km to 5,000km and sell you at near new car price you happy? This is common sense, don't pretend to be innocent. Case is very clear against you already.

Moderators, have a look and deal with this accordingly please. Think it's enough to warrant a dispute tag.