Can a virus or malware cause windows to think it is not Genuine

Norton Security | Norton Internet Security
1

I was working on my Pastor's computer yesterday.   She has a gateway laptop and she yesterday morning norton ran a scan and cleaned a bunch of stuff...

 

ccsvchst.exe, cltlmh.exe and Ischeculesvc.exe.  After this she is getting the messag that Windows is not Genuine.  She has the label on the bottom of her computer with a valid poduct key.  I was gonna have her go back to microsoft site and checkthe validation again, but why would that happen out of the blue.  The computer was purchased from gateway.

2

It would appear that the problem has something to do with the sentence "she cleaned a bunch of stuff."  If those are some of the files that were removed, there is a large percentage of Norton missing as well.  At the moment it is looking as though she over-cleaned the computer.

 

What Norton product and version are you using? 

 

3

Hello

 

Also, what operating system and service pack and whether 32 or 64 bit please? Thanks.