[manic]

Probably 2 different brands of ram, compatibility issue. Sometimes when
you mix brands this happens. Or it could be the same brand, but a voltage
tick that one stick doesnt like.
Check the voltage spec for both sticks ie, 1.7 volts, if both sticks are
the same voltage go into bios and set the voltage to 1.7, see if that
works. Chances are though that the ram is not compatible with the
board, or can not play well with each other.

 

[manic]

Put ram in slot 2 only. See what happens. Inspect slot 2, might be
some slag or something out of order in the slot.,blow it out.
Make sure ram is seated tightly..Not unheard of for a ram slot to be bad
though.