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Hyper-X RAM is high performance RAM designed for overclocking (which your system cannot do anyway). It may be too aggressively timed for the system.
Crucial sells guaranteed to work RAM - so does Kingston (the Kingson part you want is this one):
I installed 1.5V memory in my E6540, and the machine would not boot...the HDD light was on constantly, and the Batt light was flashing. I put that memory into my lenovo, and it worked fine...so I went back and bought the low voltage version, and tried again. I put 1 x 8GB into the machine, and it seemed to take a while, but did boot up.
I added the 4GB that came in the machine, and again it booted properly...seemed to boot like normal. SO, i swapped the 4GB out for a second 8GB, I got the same error...HDD light on constantly, and the Batt light flashing. I put the 4GB back in, and it booted right up...any ideas?! Everything tells me that this system can handle 16GB, but it doesn't seem so? Thanks.