My seven year old Vista laptop hasn't received any Microsoft updates since March (I know there's been some as my desktop also runs Vista - don't laugh!). I've applied the Microsoft fixit tool but update just searches endlessly but never finds any.
Also, the CPU is running flat out all the time and chucking out quite a bit of heat. I run Norton Utilities on it, and other than the odd fault and cookies, it never finds anything.
It has a Core 2 Duo CPU, and 4GB RAM. Would it run Windows 10? I know Vista support ends next Apil, which is kind of ironic as it seems to have ended already!
I've disabled automatic updates. In Task Manager Trusted Installer doesn't appear. The ones using most of the CPU are Firefox and SVCHOST. As I'm not the only one who can't get updates I wonder if Microsoft are doing this. Their upgrade website says, as my computer is running Vista, I should buy a new one with Windows 10. Not happening, I've recently got a MacBook, and actually prefer it.
I've done as you suggested, thanks for your advice. When I disconnect the internet the CPU use drops quite a lot. The only problem is I use it mostly for the internet! My desktop also runs Vista, and doesn't have any of these problems (my laptop has a Core 2 Duo CPU, and my desktop has a Core 2 Quad CPU, both have 4GB RAM). I used to use Google Chrome, which worked fine. I only changed to Firefox when Chrome stopped supporting Vista. Firefox regularly crashes. I think I've tried every browser. Internet Explorer is a no-no on Vista, Chrome no longer supports it, Firefox is unstable, and Safari doesn't support it either. Looks like my laptop is going be retired, and replaced with the MacBook.