I removed the memory sticks and now when I try to put them back the computer beeps. This is my son's computer and I need to fix it soon.I did not look at the memory sicks before I removed them so I am unsure if they are in the right location. One memory sick is a Samsung DDR 256mb. The other is a kingston KVR. KVR333/256R. The computer is a HP Pavilion A1200e. Thank you so much for your help!