Or you can install Windows 10 on the existing hard drive. That's probably the least expensive option.

I have read though I have no personal experience that you can install Windows 10 and you can continue to use it. Or Linux.

You'd need at least 4 GB of RAM.

I would definitely install a SSD. 120 GB will be fine and cost about $20-25 for a name brand.

.

So if I install a 120GB SSD and then upgrade to Windows 10, all will be fine? 

There's nothing else that will stop it from working ?

• Ah sorry my mistake.

The bit I've read on it is that it probably won't work on my machine? 

Suppose I could give it a whirl.

Nothing to lose.