Instructions on how to debug a hard drive disk

Some friends told me that If I want to get rid of a virus, I should debug my HDD and I will find online instructions on how to do this.
I have never performed a task like this, and I know for sure that there is a virus stuck in my PC.
Tried several antivirus software but nothing.
And I thought that Techyv will be able to help me with my problem.
So I ask you guys, if you could explain to me how to debug a hard drive and get rid of this virus thing.
Any help would be appreciated.
