Form Factor

[DeliveryGuy23]

I have a hp pavilion 521 c and want to upgrade it. i want to almost strip all the parts in the computer but i am wondering what the from factor for the case is or how to find the form factor so that i don't get the wrong size motherboard.

 

[1snoop2]

you could probably find out on the HP website, but if you are building a decent rig I would HIGHLY recommend you buy a better case!