I lost 20 BTC my HD died and I lost wallet backup. I just want keep my pc running a couple of days trying to get the key, I know it is a waste of time but id like to know if any software can do it.
if you Hard Disk died then you have to try HD recovery tools not private key brute force tool! unless you know all the characters in your private key except 2 or 3 of them. if that is the case there may be some tools which i can recommend but from what you explain i doubt it.