It sounds like a whirling, louder than ever. I think it's the fan, or worse, the hard drive. The fan has been cleaned relatively recently. The hard drive is not the original one, but a replacement somewhere along the lifeline of the box, as the original one became corrupt like a politician. At least it issued no denials.
If you are a friend and you lose track of me for a few days or weeks, the box did die and the replacement will bring with it many issues to resolve. I THINK I have saved on an outboard drive my email addresses but I can't be sure they will import into a new box when and if.
The other day my computer just shut DOWN in the middle of my typing... odd thing is that locally someone cut through a cable which took down all phone and internet for a while. And Terri's computer also died at work, another 'never before' thing.
Viruses are constantly checked on my computer... so I doubt that's an issue.
Just - stay in touch if I go away... I'll be back.