Best practices when selling PC

Wondering if anyone can advise on this. Recently reformatted and updated my PC. I had forgotten to backup a few images so I ran recuva on it and was shocked to see hundreds of thousands of residual, recoverable files. What would be the steps to clean the residual information. Is there a particular software I might use? I've already reset to factories, updated windows and all that already. Thanks!

 

Read this:
http://forums.majorgeeks.com/showthread.php?t=282977&highlight=wipe+hard+drive
Good suggestions of software to use to wipe hard drive there.

Also read this:http://forums.majorgeeks.com/showthread.php?t=282977&highlight=wipe+hard+drive

 

It's no good using something like Dban as that will remove the Windows installation you've just updated. CCleaner's Drive Wiper can overwrite unused space which is what you are wanting to do I think. Be warned - it can take quite a while, depending on how many passes you select.

http://www.majorgeeks.com/files/details/ccleaner_standard.html

 

Sorry I answered in a hurry and just now noticed my second link was actually not my second but my first again.rolleyes
It should of been this http://forums.majorgeeks.com/showthread.php?t=263793
Sorry about that!:-o

 

I use eraser every time I want to delete a file. It offers 1, 3, 7 or 35 passes over a file.
http://www.majorgeeks.com/files/details/eraser.html

I'm actually using v 5.6 and 5.8.8 on our computers.

 

Much appreciated. I'll take a look at all of these.

 

You can find lots of versions here http://www.oldapps.com/eraser.php
scroll down below the download for the newest version.