Laptop RAM upgrade wont boot up

[Chris Whitmer]

The other day I attempted to upgrade my Elitebook 9480m to 16gb of RAM. I got a stick of PNY 8gb DDR3 1600mhz PC3-12800 CL11 1.5v SODIMM to install but the computer wont boot with this memory installed. Even when it is installed on its own I cannot get it to boot up. When I remove it, the computer boots up just fine. Could it be a voltage issue? I believe the currently RAM is 1.35v and all recommended compatible Crucial RAM for this laptop is 1.35v as well.

Any ideas?

 

[Shaun o]

Even with an sodimm you have to be aware when buying memory that there are a few conditions even if the laptop states it can be upgraded to 16GB of memory.

I hope you checked that the laptop could indeed take 16GB of memory.

But what you have to watch out for is that you bought the same type and speed of memory that pre exists in the laptop.

You also have to check what it states each SODIMM memory slot can take in capacity of memory stick based on how may SODIMM slots it has.

The standard on most laptops is 2 Sodimm slots.
You must also take note of how the existing memory modules are populated with memory chips.

For example a Sodimm can have memory chips that are populated on both sides of the memory stick, though *gb in capacity.

Where as another sodimm memory module may only have memory chips populated on one side of the Sodimm memory.
Placing the two type of sticks in a system renders it from not booting due to the way the chips on both differ.

So I suggest you see if this is the case between the old memory sticks and the new one you bought.
If you know the system will, or can be upgraded to a maximum of 16Gb of system memory.

If the case you will have to find a memory module in SODIMM format that has the same population of memory chips on the stick.