If only one stick failed, you would get a different message, except for particular errors on the first memory stick. Remove all memory except for the first slot.  Try each memory stick alone in the first slot. If that doesn't work, then clear the NVRAM using the jumpers on the motherboard. If it still doesn't work, you can try removing any unnecessary devices (expansion cards, RAID card, drives, and DRAC (if present). If it still doesn't work, remove each processor, trying each processor in the first slot. If it still doesn't work, then it will be the memory controller (motherboard) that is bad.
Hey Guys,  So I have a Dell Poweredge 2950 Gen III. Everything is stock with no changes to anything. I use it for a ridiculous Home server.  I use it with Windows Home server 2011 to store my media. Last night my wife and I watched a movie and went to bed. I got home from work tonight and noticed it wasn't showing on my network. I went over and checked it and Noticed that there was no video on the console monitor. Then I saw the Error Code E2010 No memory on the LCD Display. I haven't changed anything from last night to this afternoon. I have 4 sticks of Dell 1 Gb ECC in it. Any ideas of what is going on? If one stick were to fail would that shoot that error code?  Thanks for any help you guys can give.   -Trevor 
Error Code E2010 No Memory Found