Hello all,
I am browsing the internet in search for a good gaming PC at the moment, with a maximum price of £700.00. Seeing as a lot of the graphics cards aren't that good in my opinion, the question I ask is: can I open up a store-bought computer and replace the parts? The games I am looking to play are Battlefield 4 and Garry's Mod (which lags on my laptop with a GT635M 2GB, 6GB of RAM and i7-3632qm).
I can't build my own now as I don't have the expertise to do it. I get the impression that pre-built store PCs are locked down and difficult to modify, but I may be wrong. Here's an example of one I wish to modify: http://www.pcworld.co.uk/gbuk/computing/desktop-pcs/desktop-pcs/hp-pavilion-550-179na-desktop-pc-exclusive-white-10138704-pdt.html
Thanks in advance for your answers!
edit at 17:30: i'll be able to respond in a few minutes to 1 hour, thank you.
I am browsing the internet in search for a good gaming PC at the moment, with a maximum price of £700.00. Seeing as a lot of the graphics cards aren't that good in my opinion, the question I ask is: can I open up a store-bought computer and replace the parts? The games I am looking to play are Battlefield 4 and Garry's Mod (which lags on my laptop with a GT635M 2GB, 6GB of RAM and i7-3632qm).
I can't build my own now as I don't have the expertise to do it. I get the impression that pre-built store PCs are locked down and difficult to modify, but I may be wrong. Here's an example of one I wish to modify: http://www.pcworld.co.uk/gbuk/computing/desktop-pcs/desktop-pcs/hp-pavilion-550-179na-desktop-pc-exclusive-white-10138704-pdt.html
Thanks in advance for your answers!

edit at 17:30: i'll be able to respond in a few minutes to 1 hour, thank you.