There's usually no way to bring a dimmslot back to life without some serious soldering and low level component troubleshooting knowledge. Your best bet is to just replace the whole motherboard. If your system is under warranty, Dell support will replace the board for you. If it's not under warranty, look on the board for the DS/N (Dell serial number). It will have 2 letter reflecting the country of manufacturing (e.g. CN = China), then there is a 0 (zero). The next 5 characters are the Dell part number. Look for this on Google and/or Ebay to find a replacement motherboard (for a much better price than Dell's spare parts usually wants for it).
Hi all,  I am trying to upgrade my R610 to 16 gigs of ram, and am getting beat up terribly. Slot b4 is bad, and the bios disables it on every boot. I have tried just populating channels 2 and 3, but it complains every time and tells me it really wants the RAM in channel 1.   Does anyone have any ideas for this situation, or am I SOL? Any advice on somehow getting a bad RAM slot to come back to life?  Thanks in advance!
Is there any way for me to use 8 sticks of RAM in my r610 when RAM slot b4 is 
bad?