Ok, no Imac update, but....

[komiez]

I would be surprised if you had a virus.

it might be adware.

Download malwarebyres and run it:

https://www.malwarebytes.com/antimalware/mac/

That's good! Also Avast has a good internet security tool called Avast Mac Security, blocks all bad websites etc.
That, Malwarebytes plus AdBlockPlus is the win for safe browsing!

 

[Trebuin]

How are you even able to get Sierra? Isn't your iMac out of date?

No, I don't have Sierra because the 2007 is out of date, I have 10.11 and that's slow to no end.

 

[PASF]

How are you even able to get Sierra? Isn't your iMac out of date?

I know on my iMac I can not get anything higher than Snow Leopard.
I could pay for the next one up , El Capitan (?) , but decided not to. I had paid about 1 year earlier for Snow Leopard.
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That's good! Also Avast has a good internet security tool called Avast Mac Security, blocks all bad websites etc.
That, Malwarebytes plus AdBlockPlus is the win for safe browsing!

THANKS !! REALLY APPRECIATE YOUR HELP !!
Philip