My Windows 7 copy is not genuine anymore, what do I do?

[TE0]

Hi,

I was trying to free up ram for my laptop by deactivating some services in the task manager. I disabled a service I forgot the name of, and after that, my windows was deemed a fake copy. I keep getting these annoying messages about this copy being fake, and I cannot change the theme of my desktop. My windows was genuine, and this is irritating. Does anyone know which service I disabled? And will re-enabling it solve the issue?

Thanks in advance,
TE0

 

[SIW2]

Try a System restore

 

[flavallee]

What is the exact serial number on your Lenovo ThinkPad T420 laptop?

From what I can determine, that model laptop was introduced in 2011 and came with Windows 7 Professional 64-bit.

Is that the same Windows version which is on the Certificate-Of-Authenticity sticker of yours?