Computer Expert Needed Please

[LinuxRandal]

If you are giving it to someone you know I would delete personal files and reinstall/restore to original state.
What is everyone doing on their computers at home to have to be so paranoid about deleting files?

From dealing with pc's and users, what they are doing is:
Leaving their machines set to auto fill. So if you visit a site they have visited, you might have access to their email, passwords, paypal info, banking, financial, etc.
I am not a lawyer, but there was a case locally, where an attorney's office was broken into, and his pc's were stolen. I don't know how much the police recovered, but it left me with questions like: Can anything on those be used as evidence, in other cases, since the pc's are in evidence?
What kind of liability does the lawyer have?

I have been asked to dispose of drives by lawyers and accountants I know, and I take it very serious. When everything is said and done, I have added the magnets to my collection, and the parts are disposed of in various ways.

[MilDoc]

What is everyone doing on their computers at home to have to be so paranoid about deleting files?

Well, let's see. Mine has my will, personal financial data, credit card numbers (encrypted but nothing is perfect), and a lot more.

Windows stores stuff in so many different places anymore I no longer trust myself to find it all to delete. And, simple "delete" does NOT delete files securely. They can be recovered. There have been numerous case reports of this happening.

If you really want security, wipe, reinstall Win.