Find Windows Product Key

Press Windows key + X.

Click Command Prompt (Admin)At the command prompt, 

type: wmic path SoftwareLicensingService get OA3xOriginalProductKey

This will reveal the product key. Volume License Product Key Activation.

 

update:
powershell "(Get-WmiObject -query 'select * from SoftwareLicensingService').OA3xOriginalProductKey" 

Windows ISO Official Direct Download Links

Download Windows ISO (7, 8.1, and 10) via hack script:

• Go to https://www.microsoft.com/en-us/software-download/techbench.
• In Chrome, hit Ctrl + Shift + J to open the Console.
• In Firefox, hit Ctrl + Shift + K to open the Web Console (may need to type allow pasting before proceeding).
• In IE or Edge, hit F2 to open Developer Tools and go to Console.
• Copy and paste the following JavaScript into the JS console, and execute it: 

PasteBin

• You can now select all Windows 7, Windows 8.1 and Windows 10 ISO images that are officially available for download from Microsoft. 

Source:
https://techjourney.net/windows-7-8-1-10-iso-official-direct-download-links-from-microsoft-tech-bench/

Legal Notice on Windows Login Screen

Open Regedit, then navigate to:

HKEY_LOCAL_MACHINE > SOFTWARE > Microsoft > Windows > Current Version >Policies > System

Add or Remove legalnoticecaption and legalnoticetext Value data field

Determine your Windows system is 32-bit or 64-bit from the commandline

open command prompt, type:

wmic os get osarchitecture

Inverting direction of mouse scroll wheel

Run this in PowerShell as administrator (from Start » All Programs » Accessories » Windows PowerShell):

Get-ItemProperty HKLM:\SYSTEM\CurrentControlSet\Enum\HID\*\*\Device` Parameters FlipFlopWheel -EA 0 | ForEach-Object { Set-ItemProperty $_.PSPath FlipFlopWheel 1 }

SSID management

show wlan list:

netsh wlan show profile

remove wlan profile:

netsh wlan delete profile

How to Create a Wireless Hosted Network (WiFi Hotspot)

You can actually create a wifi hotspot from the Command prompt.
Just follow these simple steps, and you should have it ready to run.
1. Open Command prompt as administrator.
2. Type in:

netsh wlan set hostednetwork mode=allow SSID=test key=password 

(You can name your SSID and key to whatever you want it to be)
3. Type:

netsh wlan start hostednetwork 

(To stop it, type: netsh wlan stop hostednetwork)


source:  
http://www.makeuseof.com/answers/is-there-a-good-alterantive-to-connectify-pro-to-turn-windows-7-into-a-wifi-hotspot/
http://geeksandtweaks.com/wp/how-to-create-wireless-hosted-network/