Hopefully. Otherwise you'll have to get into the PC setup and change the settings. For instructions on that, look at my blog here run_interrupt_driven_hooks: still waiting Error Fix Full Contact Computing
Go 7 paragraphs down and start at the "The first step is to boot up the computer and carefully watch the screen. Typically several messages will flash by." Go on from there but you will be working with memory and not disabling ports.
Depends if your computer is even compatible with the RAM you are installing or not. Not all RAM is the same and certain operating systems will only utilize up to a certain amount of it so going overboard is a waste of money.