Clean wipe a computer

Hello,
I would like to give away my old computer which is still working with windows 10 pro, but as you know from my previous posts, it fed me a lot of troubles.
But first I want to "clean" all my documents, passwords kept on google chrome browser, pictures and videos, etc.
There are two disks installed, one is devided into two partitions,"C"is the operating system, the other "D" contains data.
The second disk is "F", one whole partition and also for data.
I do not mind leaving the operating system, because I need it to use "Macrorit Wiper" from a usb stick , just remove all personal data as mentioned above.
I would like to have your ideas how to do it, and if is possible to wipe also the operating system to blank the disks.
The disks are in good shape and the computer can be used again if a legal operating system installed.
Answers will be appreciated.
Thanks
Motim

Motim said:

the computer can be used again if a legal operating system installed.

The computer now has a digital license for Windows 10 stored on Microsoft Activation servers so Windows 10 Pro will always be a legal OS on it, even if the new owner does a clean install and skips entering a product key.

I prefer to do a clean install before selling/giving away a computer. That way I can be sure there is no private info lurking in the deep bowels of the OS somewhere.

You could boot into the recovery environment and use diskpart to delete all the partitions and disks. Then you recreate partitions and use the cipher command with the /w parameter on each partition to make sure nobody can recover any files by using file recovery tools.

Remove both disks and re-use them as external storage,or if space allows,use internally.Install a blank new disk into the give away.The only guaranteed data erase method is disk destruction.

For wiping a PC ... these work nicely.

Very nice.

Why not remove everything you need, wipe the drives clean, and then install the OS as a clean install?