Why is the maximum memory usage 512?

How 2 add memory (256+256=512) basis in my compaq presario v2000 serier laptop?

• i have compaq presario v2000 notebook.my sys config, compaq presario v2000 xp sp2, mobile pentium processor, 256 mb ram 40 gb hard disk space. now i got another 256 mb ddr ram in my hand.so i wanna add memory in my system in 256+256=512 basis.i can open system memory pay,i can view just one memory slot.but in my system manual,it has 2 memory slot. i can run belarch advisor ,to view my system config,it also shows my system have 2 memory slots.one is full(256),another one is empty.but i can't identify my system 2nd memory slot.already i can view my friends notebook(dell),there is 2 memory slot to view clearely.but in my compaq presario v2000,i can't view my 2nd memory slot. plz help, to view 2nd memory slot in my system & how to add another 256 mb ram in my system. plz explain step by step. my mail id [email protected]

• Answer:

  When I opened my presario, it took me 15 minutes to find the other slot, so I sympathize with you. If you are looking at the laptop with the battery slot to the north, the memory bay is due south in the center. When you open the bay, the factory installed memory blocks the view to the other slot. So, first remove the existing memory, then you will see a bar beneath it to the east near the center of the memory bay with a white sticker on the bar. That bar is the slot for the second memory card. That having been said, I do not advise replacing the memory yourself. If you do, you risk many problems including destroying your computer. It is probably a good idea to take it to a professional.