MacBook a1181
I have 2 questions please help I tried to upgrade the RAM and a hard drive and it just made a beeping noise is there a process I have to do to upgrade this also I bought the computer off of eBay and the lady had administrative lock on it I did not notice so I started deleting her files and deleted some important files so how do I go about to get a operating system to download on a USB and to totally delete this hard drive
MacBook