In my Previous Article, I showed how to Find Your Computer’s Windows Installation Date and Time, and now I am gonna show you How to Change Windows Installation Date and Time Using the Registry Editor.

Change Windows Installation Date using Registry Editor:

Step 1: First of all Open “Run” dialog box. To do so you can either do it by typing “Run” in the Start Menu search or by pressing the “Win+R” key combination.

Step 2: Now type “regedit” in the box that appears and hit enter. You can also type “regedit” in the Start Menu search to open Registry Editor.

Step 3: Navigate to “HKEY_LOCAL_MACHINE > SOFTWARE > Microsoft > Windows NT > CurrentVersion > “ in the Registry Editor Windows.

Step 4: You will find a key named “InstallDate” in the Right sidebar as shown in below image.Just Double Click on it.

Step 5: A new popup box will appear showing numerical value. This is the number of seconds between 1/1/1970 and your installation time.

Step 6: To change your Windows installation date just add or subtract the duration by which you want to change your date. For Example – If you wish to add one day to your installation date, then add “60x60x24=86400″ to the value.

If I wanted to add one day to my installation date, I would change the value to “1350224291″. Now Click OK after that.

That’s it, Now go and Check your Installation Date and See the Difference.

This tutorial will show you how to find and see the original date and time that you installed Windows. This method is applicable on Windows XP, Vista, Windows 7, Windows 8 and on Windows 8.1.

Also Read :- How to Change Windows Installation Date and Time Using Registry Editor.

Getting Windows Installation Date and Time with Command Prompt :

Step 1 :- Open Command Prompt, you can use Start button to open it or you can also open it by Run Dialog Box.

To open Command prompt using Run Dialog Box Press Windows+R button.

Step 2 :- Now type CMD in it and hit Enter.

Step 3 :- Now type the given Below Code in the Command Prompt Windows.

systeminfo

Wait for few minutes, and after that the above Code will Display all the System info Related with the OS.

For Install Date and time Scroll Up to the 10th line, there you will find the Date and Time at which you have installed Windows.

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