Should I update my computer?

First things first, I’m probably the least tech-savvy person of Generation Y.

Things that I know about my laptop: it’s a 5 year old HP with Windows 7 (there’s also a sticker on it that says “Intel inside// CORE i7).

Recently, my laptop has been running so slow. Issues opening/closing stuff, things closing on their own. I don’t download stuff (aside from school documents), no pirating or anything like that. I don’t have that much on here; lots of usable memory available. I’ve had a couple computer-friendly pals check it out and they can’t find anything suspicious. I have Norton and it hasn’t found anything suspicious. I had a Trojan a few years ago, though that was professionally handled. The only other thing that sticks out to me is that Netflix and Amazon keep prompting me to update/download Silverlight.

As for updating, my browser keeps suggesting an update for Windows 10.

Should I do the update? Is that something that might be a terrible idea since my laptop is a bit older? Is my laptop just flat out kicking the bucket at this point?

Feel free to ask more questions if you need to, though I can’t promise I’ll have answers. Honestly, my knowledge of computers is pitiful.