MEM0001 Multi-bit memory error on DIMM_B2. Reseat memory.

My company use a Dell Poweredge 730 rack server. 24cores 64GB RAM 2GB SWP. Today I doing regular cleaning, during the cleaning time there was a run ongoing on my server which was taking 40GB+ RAM and 475MB+ SWP memory usage. I just took those removable coolers out and cleaned them outside one by one, then all on a sudden the PC got frozen and later it took auto reboot showing the error message on the display "MEM0001 Multi-bit memory error on DIMM_B2. Reseat memory." and the backlight was beeping in Yellow. When the auto reboot completed I submit a small run and was monitoring through htop command. It showed there was usage in RAM but SWP was showing simply 0/2GB while there was a program running. The program was done completely then I switched off the PC and ON again. Then the yellow beeping was off , no error message on the display also the Yellow beeping was not showing. Then I tried some simple runs, and kept monitoring with htop; it was showing SWP usage and RAM usage everything was fine like before. Then I again submitted the computationally larger job and it did crash again, again the Yellow beeping and same error message. 
P.S. - I submitted and completed more larger systems and computationally heavy program in past 20-30days and it was absolutely fine. 

How can I solve this problem?

MEM0001 Multi-bit memory error on DIMM_B2