How to upgrade my computer's RAM?

[Jiniix]

The thing is, your motherboard isn't a standard size. Neither is your case. So you wouldn't be able to fit a new motherboard into the case, this needing a new case.
And yes, you would have to reinstall your operating system and programs.
In my experience, no. I do it for fun. But for a newbie, it might seem scary - but there's plenty video guides made by pros.

 

[voyagerfan99]

And technically he'd need to buy a new copy of Windows, since it's a new motherboard and not the OEM one.