Windows 10: how do I disassociate myself from a computer that I will give away?

See title. How?

:)

 

How do I DISassociate a file type in Windows 10?

I am having this problem with a .pes file (machine embroidery). I need to disassociate it from a file type, however, I have tried the various suggestions and it is still associated. I want it associated with unknown application. Would greatly appreciate
your assistance!

 

Windows 10 infinite restart black screen

Thank you john for all of your help i decided to get the usb my computer came with and factory reset it i didnt have anything that personal or valueable so its ok thanks for the help though i appreciate it

 

Does this computer build have compatibility problems? Opinions welcomed!

Lets start with what you're going to use this computer for, not what you want to put in it.

Rules/steps to building a computer (in chronological order):
First rule: Determine what your needs are.
Second rule: Define your budget.
Third rule: Pick parts.
Fourth rule: Review parts several times.
Fifth rule: Buy said parts.
Sixth rule: Build it.

You are on rule/step 1. Go through the list until you're done.