Upgrading an old laptop

Hi there,
I’m not exactly a tech expert when it comes to laptops, but I’m looking into upgrading an HP OfficeJet 8510. My goal is to get it up to about $1000 if possible. I realize that at some point, it just makes more sense to buy a new machine, but this isn't for me—it’s for someone who holds this specific laptop quite dear, so I’d like to try and breathe some life back into it.
Does anyone happen to know where I could go to do this, how the process works, or roughly what the cost might look like? The laptop is in great shape and still runs, even though it’s ten years old, but it’s painfully slow by today's standards and the original memory is nowhere near enough for modern tasks.
I would really appreciate any thoughts or suggestions you might have.
Thanks!

Are you kidding me right now? At least give us a breakdown of the specs—what kind of processor are we looking at and how much RAM? How are we supposed to know what can actually be upgraded if we don't even know what's under the hood?

Laptops aren't really meant to be upgraded. Especially not one that's ten years old. If you actually tried, you'd find out pretty quickly that it’s either a complete waste of money or physically impossible because you'd have to swap out basically everything inside—the motherboard, since modern components like the CPU, RAM, graphics, or even the drive won't fit, and even the screen, since those old resolutions are obsolete now.

So, you'd essentially be replacing everything except the shell, which would cost an absolute fortune. And even then, there's no guarantee the new parts would actually fit, given how much chassis designs and dimensions have changed over the years.

Basically, it's a non-starter.

Think of it like trying to restore a vintage car from the Prohibition era just because you're feeling nostalgic, but finding out there isn't a single spare part left on the planet. The only difference is that if you've got deep enough pockets, you might be able to get a custom part fabricated for a classic car. With a laptop? Not a chance.