Authentic Windows problems

So I have a genuine Windows 7 Ultimate which came with my Dell XPS 15z (purchased directly from Dell). My problems started a few weeks ago, when an update of windows seems not to have installed correctly. I regularly get pop-up messages telling me that my windows is "not authentic". I downloaded the Microsoft legitcheck.hta program, which tells me that the only solution is to buy another copy of Windows. I have Windows free keys at my University, however, but the instructions to find out where to enter tells them to go to computer-> properties and select "activate windows". But here, it says "Windows is activated"! It seems that my Windows is caught in a limbo where it cannot decide whether it is authentic or not... I uninstall the update failed, but it did not help.

Please run the Microsoft Genuine Diagnostics Tool then copy and paste the results into an answer here for further analysis:
http://go.Microsoft.com/fwlink/?LinkId=52012

Have you installed a new hardware or software since you started facing this problem?

Do you have any software installed record cleaning? If so, uninstall it, registry software is known to tamper with Windows activation technologies.

What Antivirus utility you installed?

What's your date and time correct?

Also:

Check your hard drive for errors:

Click Start

Type: CMD, according to the results, right-click CMD

Click on "Run as Administrator"

At the command prompt, type: chkdsk /f /r

When you restart your system, your computer will be scanned for errors and will try to correct them.

then

Click Start
Type: CMD, according to the results, right-click CMD
Click on "Run as Administrator"
At the command prompt, type: sfc/scannow

This will check for any breach of integrity

Restart your system

You can also try to do a system restore before you start experiencing this problem:

How to use System Restore in Windows 7 [easy, 5-10 Min]

Tags: Windows

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