On 12/7/2018 7:28 PM, wrote:
On Friday, December 7, 2018 at 6:01:08 PM UTC-8, wrote:
Hi,

I've acquired 2x4GB new memory from Crucial as I found it to be compatible with my PC(ASUS CM6850) on crucial.com.

It suggested `DDR3L-1600 UDIMM` and that is what I got (results slightly changed but still align: https://www.crucial.com/usa/en/compa...#MEMORYFilters)

Now, I popped them into the two empty banks in my PC, turned it on, the fans spun up but both screens stayed black, I removed one bank, repeated the power up procedure but got the same result. I then removed both new banks and now it powered up again properly as it's supposed to.

Does this mean the memory I got is for some reason incompatible with my system?
Why?

Here's some images:
The label on my PC: http://gdurl.com/qN7c
The existing RAM on the main board: http://gdurl.com/vHcm
My new memory that I wanted to add: http://gdurl.com/rOee

I think your problem is that you have PC3 and PC3L memory.
The Samsung is likely 1.5V, the Crucial is 1.35V
As I understand it, the low voltage memory is supposed to be
backward compatible, but isn't always. Never could tell whether
the PC3L was 1.5V tolerant or whether the motherboard could tell
and reduce the voltage as required.

I have the same problem with a laptop.
My PC3L is labeled for Apple computers, so that may be a different/another
issue as well.