Memory Compatibility for Optiplex 780

HI,

I'm having a problem trying to upgrade the memory for my Optiplex 780. Short version: this Desktop only have compatibility with "DELL" Kingston memory and other "NO DELL" Kingston memory with the same exact specifications don't work. I have the last A15 Bios and I've tried both memory models in all combinations but with the new memory inserted (and no, it's not a defective memory) I get green 3 & 4 lights with no boot just connecting the power.

Question: Is there a compatibility solution? Can we have a new A16 Bios to fix this?

THANK YOU!

Additional information:

- The memory is 4GB DD3 1333 MHz PC3-10600 1.5v CL9 Non ECC 240 pin. The manual "optiplex-780-tech-guide.pdf" says it's ok, and it's the same specification that a working "DELL" memory.

- Kingston lists that both models KTD-XPS730A/4G (1066 Mhz) and KTD-XPS730B/4G (1333 Mhz) are discontinued (see link below) and it's hard to find in my country any Kingston KTD model, so that's why I need to use a similar memory.

http://www.kingston.com/us/memory/search/discontinuedmodels/Default.aspx?DeviceType=2&Mfr=DEL&Line=Optiplex&Model=58386&DisPart=KTD-XPS730B/4G&Description=Kingston_for_DEL_Optiplex_Dell_-_Optiplex_780_DT_/_MT_/_SFF

- This are the specs of the working "DELL" memory:

http://www.kingstonmemorycards.co.uk/kingston-4gb-ddr3-dell-dimm-ram-memory-module-ktd-xps730b-4g

- This are the specs of the "NO DELL" non working memory:

http://www.kingstonmemorycards.co.uk/kingston-kvr13n9s84-4gb-ddr3-pc3-10600-1333mhz-non-ecc-memory-1-5v-cl9-dimm?keyword=kvr13n9s8/4&category_id=0&description=1&model=1