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Step 1: A memory slot is a slot in your motherboard where you place your RAM (Random Access Memory) card. In layman's terms, the RAM is the "temporary memory" that the computer utilizes whenever it is turned on. If the computer cannot detect a RAM card installed in one of your memory slots, you have to troubleshoot the problem immediately. Ensure that the problem is with the RAM slot and not the memory card. Turn off the computer, unplug all devices connected into the ports of your computer and open the computer casing. Refer to the manual of the computer to know the specific steps to follow in opening the computer casing. Remove the memory card from the RAM slot. To do this, unlock the card using both hands. Pull the card away from the slot to remove. Inspect the RAM card for any apparent physical damages. Wipe the card with a clean cloth to remove dust. Also wipe the memory slot in your motherboard. Place the RAM card back into the memory slot. Press the card into the slot until it clicks into place. Close the computer casing, connect the cables back into their respective slots and turn on the computer. Turn on the computer and see if the memory is detected. If the computer does not boot up, the RAM card is not detected by the computer. Assuming that you have two memory cards installed in the computer and the computer boots up, check if the second memory card is detected by the computer. Click "Start," right-click "Computer" and then "Properties." Under "System," check the amount of "Installed Memory (RAM)." If the RAM is not detected, the RAM slot or the RAM card itself may be malfunctioning. Place the RAM card into another memory slot in your motherboard and see if the card is detected. If it is detected, the other memory slot is malfunctioning. Do not install any RAM card into it to avoid further damage. If it is not detected, the RAM card may be malfunctioning. Insert another RAM card into the slot. If the RAM card is detected, the slot is malfunctioning. http://www.youtube.com/watch?v=wGp5AiyJInI repair memory slot
Try swapping the memory in the two slots. It sounds like either one of the memory chips is bad or one of the memory slots is bad. If you find that one of the slots is bad, then you might try just putting a 1GB Chip in the slot that works.
Memory Sockets or Slots are the place where memory
RAM modules are inserted in the motherboard. The Acer Aspire Z3731 has
4 (4 banks of 1) memory expansion slots. A memory bank is a group of
memory expansion sockets, a bank must be completely filled with memory
modules of the same size and type in order for the system to recognize
and address the memory. i.e. :
2 sockets (2 banks of 1) This indicates that there
are 2 memory slots. These are divided into 2 banks, and each bank
consists of one memory slot. So you can add memory one piece at a time
for the system to use.
3 sockets (3 banks of 1) This indicates that there
are 3 memory slots. These are divided into 3 banks, and each bank
consists of one memory slot. So you can add memory one piece at a time
for the system to use.
4 sockets (2 banks of 2) This indicates that there
are 4 memory slots. These are divided into 2 banks, and each bank
consists of two memory slots. So you must add memory two pieces at a
time (they must be the same size and type of memory) in order for the
system to benefit from the upgrade.
8 sockets (4 banks of 2) This indicates that there
are 8 memory slots. These are divided into 4 banks, and each bank
consists of two memory slots. So you must add memory two pieces at a
time (they must be the same size and type of memory) in order for the
system to benefit from the upgrade.
12 sockets (3 banks of 4) This indicates that there
are 12 memory slots. These are divided into 3 banks, and each bank
consists of four memory slots. So you must add memory four pieces at a
time (and they must be the same size and type of memory) in order for
the system to benefit from the upgrade.
put the largest ram closest to CPU central processing unit make sure that the ram are of the same brand/type some motherboards only accept a certain brand/type
most probably the problem that you have is not on the RAM stick itself but on the memory slot. Both memories can be detected by slot 1 indicates that both are working.. both working memories cant be detected in slot 2 which indicates a bad memory slot
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