DS10L not boot

[Rafael Ruiz Rubio <gandano@gmail.com>]

Hello.

I had a DS10L alphaserver without memory time ago. Now i have got two
256MB memory modules for DS10L, but when i try to boot my computer, i
only can see a blue screen with a  blink cursor on top left corner of
my screen.

Can you help me? What happen?

Thanks
Rafa