Changing Product Key on Window8 and Window Server 2012

To change the product key without first activating Windows, use one of the following methods:

Method 1

1. Swipe in from the right edge of the screen, and then tap Search. Or, if you are using a mouse, point to the lower-right corner of the screen, and then click Search.
2. In the search box, type Slui 3.
   
   
3. Tap or click the Slui 3 icon.
4. Type your product key in the Windows Activation window, and then click Activate.
   
   

Method 2

1. Swipe in from the right edge of the screen, and then tap Search. Or, if you are using a mouse, point to the lower-right corner of the screen, and then click Search.
2. Type Command Prompt in the Search box.
   
   
3. Right-click Command Prompt, and then click Run as administrator. If you are prompted for an administrator password or for a confirmation, type the password, or click Allow.
   
   
4. Run the following command at the elevated command prompt:
   slmgr.vbs /ipk <Your product key>

Reference: http://support.microsoft.com/kb/2750773

[How] Remove printer driver completely!!

Have you thinking of completely remove printer driver after you have tried a lot various of printer driver in a single laptop?
Or you facing some printer issue that need to remove it completely?

Come here, the guide will just help you well! =)

Firstly, go to run and open Microsoft Management Console as below.

Second, you will see this screen pop out and go to File - select Add/Remove snap-in

Third, just select Print Management add from left panel to right panel.

After you click on Add button, then you will see this, just click on Add the Local Server, then it will be same with previous snapshot.

Next, you will see your snap-in similar as below, then go to Print Management - Print Servers - Local Server - Drivers

Finally, select the driver packages that you want to delete and It will no longer exist and forever deleted from your local machine.

Thank you. =)

Resource:

http://www.sagardezign.com/blog/remove-windows-7-printer-drivers-completely/

http://forums.techarena.in/operating-systems/1288736.htm