Abilay, SBE and MBE are Single Bit Errors and Multiple Bit Errors. Try taking the server to the minimum memory configuration and place dimm #4 in slot 2 and remove all the other dimms. Then power up and see if the server POSTs. If it doesn't then power down the server and remove everything but the following; If it POSTs normally under that configuration then individually add the removed parts back until the error returns and that identifies the problem.  If you remove all the dimms (except slot 2)and it POSTs then we will need to clear the SBE/MBE log to get an accurate account of which dimms are bad, There are a couple ways to do so.depending on the OS installed on the server, as well as is Open Manage installed as well? Let me know what you find. 
Hi, I have a PE 2970, with serial number S/T (REMOVED BY MODERATOR),server is turn on, but in the screen no image, and the on the LCD  messages, E2110 MBE DIMM 5 &6 and E2111 SBE Log Disable DIMM6.What is  the MBE and SBE?And how you  think is the problem? Regards, Abilay!
Del Power Edge 2970 problem with video