Please help with an 8RDA+

[Ilmater]

Took two sticks of memory (that were previously used in another 8RDA+) and stuck them in a different 8RDA+. When we booted that system up, it made a long beeping sound. After taking out one stick (they were identical, BTW), we tried booting again and got the same beeping sound. The LED says FF (which is nothing), but it's clearly not booting. Any help is appreciated.

 

[Bonesdad]

Take out sticks, check for grungies in the DDR slots and on the sticks. Try with just one stick. Be sure they are seated firmly. New processor?