Pre-sale preparation of the laptop. What are you doing?

Question

Iron

Hello. I updated my hardware here and I want to sell the old laptop. How to clean it before selling? Well, then it was impossible to recover.
I don't have any secrets here, of course. But it's better to play it safe :)
What are you doing?

Answer 1

format and deploy back the system from the recovery partition

Answer 2

You can do low-level formatting, or, as recommended here, use Acronis tryu image, there is a data deletion tool, according to various standards.

Answer 3

SDelete by MS.

Answer 4

• Checking the health of the HDD - replacement in case of malfunction
  
• Complete disassembly and cleaning from dust and dirt
  
• Cleaning / washing the case
  
• Replacement of thermal interfaces
  
• Blowing/washing the radiator/radiators
  
• Blowing out and cleaning the keyboard and the space below it
  
• Disassembling and cleaning the touchpad
  
• Thorough screen cleaning
  
• Checking the battery for serviceability and calibrating if necessary
  
• In the presence of an optical drive - disassembly and cleaning and it too
  
• Assembly and replacement of faulty equipment
  
• Stress testing throughout the day