Upgrade to 48GB ram, Dell T3500 / Lenovo S20

Hello everyone,

I have an issue, i bought 48 Gb ram 6x8, and i cannot install them in my workstations.

I tried with - T3500 , X5660 , bios A17 , the system just won t boot.

I tried with - Lenovo S20 , X5660, latest bios , the same thing

Till now i used the same type of memory , only it was 6x2 and 3x4 , it works.

I saw on youtube that is possible but i don t know how.

Attached a screenshot of the 6x8 Gb ram.

Thank you in advanced.