I am new to all the computer hardware stuff. The computer I have is an old one, running Windows XP. I had 96mb of memory installed. I went to www.kahlon.com to purchase another memory card. Used their memory configurator and purchased the 128mb card that they recommended. I have 3 memory slots in the computer, one was empty. I installed the new card using the information from the various guides I had read on installing memory. When I tried to boot up the computer, it just beeped. I took out the new card, and it booted up fine. I then installed another 64mb card, and it booted fine again. One thing that I did notice is that the cards that will work in the computer have the small black chips on only one side, while the new card has chips on both sides. Is that the issue?